Pick a pair to see its greatest common factor and least common multiple with three methods: listing factors, prime factorization and the Euclidean algorithm. For any other numbers use the GCF and LCM calculator.
2 and 3 · 2 and 4 · 2 and 5 · 2 and 6 · 2 and 7 · 2 and 8 · 2 and 9 · 2 and 10 · 2 and 11 · 2 and 12 · 2 and 13 · 2 and 14 · 2 and 15 · 2 and 16 · 2 and 17 · 2 and 18 · 2 and 19 · 2 and 20 · 2 and 21 · 2 and 22 · 2 and 23 · 2 and 24 · 2 and 25 · 2 and 26 · 2 and 27 · 2 and 28 · 2 and 29 · 2 and 30 · 2 and 36 · 2 and 40 · 2 and 45 · 2 and 48 · 2 and 50 · 2 and 60 · 2 and 100
3 and 4 · 3 and 5 · 3 and 6 · 3 and 7 · 3 and 8 · 3 and 9 · 3 and 10 · 3 and 11 · 3 and 12 · 3 and 13 · 3 and 14 · 3 and 15 · 3 and 16 · 3 and 17 · 3 and 18 · 3 and 19 · 3 and 20 · 3 and 21 · 3 and 22 · 3 and 23 · 3 and 24 · 3 and 25 · 3 and 26 · 3 and 27 · 3 and 28 · 3 and 29 · 3 and 30 · 3 and 36 · 3 and 40 · 3 and 45 · 3 and 48 · 3 and 50 · 3 and 60 · 3 and 100
4 and 5 · 4 and 6 · 4 and 7 · 4 and 8 · 4 and 9 · 4 and 10 · 4 and 11 · 4 and 12 · 4 and 13 · 4 and 14 · 4 and 15 · 4 and 16 · 4 and 17 · 4 and 18 · 4 and 19 · 4 and 20 · 4 and 21 · 4 and 22 · 4 and 23 · 4 and 24 · 4 and 25 · 4 and 26 · 4 and 27 · 4 and 28 · 4 and 29 · 4 and 30 · 4 and 36 · 4 and 40 · 4 and 45 · 4 and 48 · 4 and 50 · 4 and 60 · 4 and 100
5 and 6 · 5 and 7 · 5 and 8 · 5 and 9 · 5 and 10 · 5 and 11 · 5 and 12 · 5 and 13 · 5 and 14 · 5 and 15 · 5 and 16 · 5 and 17 · 5 and 18 · 5 and 19 · 5 and 20 · 5 and 21 · 5 and 22 · 5 and 23 · 5 and 24 · 5 and 25 · 5 and 26 · 5 and 27 · 5 and 28 · 5 and 29 · 5 and 30 · 5 and 36 · 5 and 40 · 5 and 45 · 5 and 48 · 5 and 50 · 5 and 60 · 5 and 100
6 and 7 · 6 and 8 · 6 and 9 · 6 and 10 · 6 and 11 · 6 and 12 · 6 and 13 · 6 and 14 · 6 and 15 · 6 and 16 · 6 and 17 · 6 and 18 · 6 and 19 · 6 and 20 · 6 and 21 · 6 and 22 · 6 and 23 · 6 and 24 · 6 and 25 · 6 and 26 · 6 and 27 · 6 and 28 · 6 and 29 · 6 and 30 · 6 and 36 · 6 and 40 · 6 and 45 · 6 and 48 · 6 and 50 · 6 and 60 · 6 and 100
7 and 8 · 7 and 9 · 7 and 10 · 7 and 11 · 7 and 12 · 7 and 13 · 7 and 14 · 7 and 15 · 7 and 16 · 7 and 17 · 7 and 18 · 7 and 19 · 7 and 20 · 7 and 21 · 7 and 22 · 7 and 23 · 7 and 24 · 7 and 25 · 7 and 26 · 7 and 27 · 7 and 28 · 7 and 29 · 7 and 30 · 7 and 36 · 7 and 40 · 7 and 45 · 7 and 48 · 7 and 50 · 7 and 60 · 7 and 100
8 and 9 · 8 and 10 · 8 and 11 · 8 and 12 · 8 and 13 · 8 and 14 · 8 and 15 · 8 and 16 · 8 and 17 · 8 and 18 · 8 and 19 · 8 and 20 · 8 and 21 · 8 and 22 · 8 and 23 · 8 and 24 · 8 and 25 · 8 and 26 · 8 and 27 · 8 and 28 · 8 and 29 · 8 and 30 · 8 and 36 · 8 and 40 · 8 and 45 · 8 and 48 · 8 and 50 · 8 and 60 · 8 and 100
9 and 10 · 9 and 11 · 9 and 12 · 9 and 13 · 9 and 14 · 9 and 15 · 9 and 16 · 9 and 17 · 9 and 18 · 9 and 19 · 9 and 20 · 9 and 21 · 9 and 22 · 9 and 23 · 9 and 24 · 9 and 25 · 9 and 26 · 9 and 27 · 9 and 28 · 9 and 29 · 9 and 30 · 9 and 36 · 9 and 40 · 9 and 45 · 9 and 48 · 9 and 50 · 9 and 60 · 9 and 100
10 and 11 · 10 and 12 · 10 and 13 · 10 and 14 · 10 and 15 · 10 and 16 · 10 and 17 · 10 and 18 · 10 and 19 · 10 and 20 · 10 and 21 · 10 and 22 · 10 and 23 · 10 and 24 · 10 and 25 · 10 and 26 · 10 and 27 · 10 and 28 · 10 and 29 · 10 and 30 · 10 and 36 · 10 and 40 · 10 and 45 · 10 and 48 · 10 and 50 · 10 and 60 · 10 and 100
11 and 12 · 11 and 13 · 11 and 14 · 11 and 15 · 11 and 16 · 11 and 17 · 11 and 18 · 11 and 19 · 11 and 20 · 11 and 21 · 11 and 22 · 11 and 23 · 11 and 24 · 11 and 25 · 11 and 26 · 11 and 27 · 11 and 28 · 11 and 29 · 11 and 30 · 11 and 36 · 11 and 40 · 11 and 45 · 11 and 48 · 11 and 50 · 11 and 60 · 11 and 100
12 and 13 · 12 and 14 · 12 and 15 · 12 and 16 · 12 and 17 · 12 and 18 · 12 and 19 · 12 and 20 · 12 and 21 · 12 and 22 · 12 and 23 · 12 and 24 · 12 and 25 · 12 and 26 · 12 and 27 · 12 and 28 · 12 and 29 · 12 and 30 · 12 and 36 · 12 and 40 · 12 and 45 · 12 and 48 · 12 and 50 · 12 and 60 · 12 and 100
13 and 14 · 13 and 15 · 13 and 16 · 13 and 17 · 13 and 18 · 13 and 19 · 13 and 20 · 13 and 21 · 13 and 22 · 13 and 23 · 13 and 24 · 13 and 25 · 13 and 26 · 13 and 27 · 13 and 28 · 13 and 29 · 13 and 30 · 13 and 36 · 13 and 40 · 13 and 45 · 13 and 48 · 13 and 50 · 13 and 60 · 13 and 100
14 and 15 · 14 and 16 · 14 and 17 · 14 and 18 · 14 and 19 · 14 and 20 · 14 and 21 · 14 and 22 · 14 and 23 · 14 and 24 · 14 and 25 · 14 and 26 · 14 and 27 · 14 and 28 · 14 and 29 · 14 and 30 · 14 and 36 · 14 and 40 · 14 and 45 · 14 and 48 · 14 and 50 · 14 and 60 · 14 and 100
15 and 16 · 15 and 17 · 15 and 18 · 15 and 19 · 15 and 20 · 15 and 21 · 15 and 22 · 15 and 23 · 15 and 24 · 15 and 25 · 15 and 26 · 15 and 27 · 15 and 28 · 15 and 29 · 15 and 30 · 15 and 36 · 15 and 40 · 15 and 45 · 15 and 48 · 15 and 50 · 15 and 60 · 15 and 100
16 and 17 · 16 and 18 · 16 and 19 · 16 and 20 · 16 and 21 · 16 and 22 · 16 and 23 · 16 and 24 · 16 and 25 · 16 and 26 · 16 and 27 · 16 and 28 · 16 and 29 · 16 and 30 · 16 and 36 · 16 and 40 · 16 and 45 · 16 and 48 · 16 and 50 · 16 and 60 · 16 and 100
17 and 18 · 17 and 19 · 17 and 20 · 17 and 21 · 17 and 22 · 17 and 23 · 17 and 24 · 17 and 25 · 17 and 26 · 17 and 27 · 17 and 28 · 17 and 29 · 17 and 30 · 17 and 36 · 17 and 40 · 17 and 45 · 17 and 48 · 17 and 50 · 17 and 60 · 17 and 100
18 and 19 · 18 and 20 · 18 and 21 · 18 and 22 · 18 and 23 · 18 and 24 · 18 and 25 · 18 and 26 · 18 and 27 · 18 and 28 · 18 and 29 · 18 and 30 · 18 and 36 · 18 and 40 · 18 and 45 · 18 and 48 · 18 and 50 · 18 and 60 · 18 and 100
19 and 20 · 19 and 21 · 19 and 22 · 19 and 23 · 19 and 24 · 19 and 25 · 19 and 26 · 19 and 27 · 19 and 28 · 19 and 29 · 19 and 30 · 19 and 36 · 19 and 40 · 19 and 45 · 19 and 48 · 19 and 50 · 19 and 60 · 19 and 100
20 and 21 · 20 and 22 · 20 and 23 · 20 and 24 · 20 and 25 · 20 and 26 · 20 and 27 · 20 and 28 · 20 and 29 · 20 and 30 · 20 and 36 · 20 and 40 · 20 and 45 · 20 and 48 · 20 and 50 · 20 and 60 · 20 and 100
21 and 22 · 21 and 23 · 21 and 24 · 21 and 25 · 21 and 26 · 21 and 27 · 21 and 28 · 21 and 29 · 21 and 30 · 21 and 36 · 21 and 40 · 21 and 45 · 21 and 48 · 21 and 50 · 21 and 60 · 21 and 100
22 and 23 · 22 and 24 · 22 and 25 · 22 and 26 · 22 and 27 · 22 and 28 · 22 and 29 · 22 and 30 · 22 and 36 · 22 and 40 · 22 and 45 · 22 and 48 · 22 and 50 · 22 and 60 · 22 and 100
23 and 24 · 23 and 25 · 23 and 26 · 23 and 27 · 23 and 28 · 23 and 29 · 23 and 30 · 23 and 36 · 23 and 40 · 23 and 45 · 23 and 48 · 23 and 50 · 23 and 60 · 23 and 100
24 and 25 · 24 and 26 · 24 and 27 · 24 and 28 · 24 and 29 · 24 and 30 · 24 and 36 · 24 and 40 · 24 and 45 · 24 and 48 · 24 and 50 · 24 and 60 · 24 and 100
25 and 26 · 25 and 27 · 25 and 28 · 25 and 29 · 25 and 30 · 25 and 36 · 25 and 40 · 25 and 45 · 25 and 48 · 25 and 50 · 25 and 60 · 25 and 100
26 and 27 · 26 and 28 · 26 and 29 · 26 and 30 · 26 and 36 · 26 and 40 · 26 and 45 · 26 and 48 · 26 and 50 · 26 and 60 · 26 and 100
27 and 28 · 27 and 29 · 27 and 30 · 27 and 36 · 27 and 40 · 27 and 45 · 27 and 48 · 27 and 50 · 27 and 60 · 27 and 100
28 and 29 · 28 and 30 · 28 and 36 · 28 and 40 · 28 and 45 · 28 and 48 · 28 and 50 · 28 and 60 · 28 and 100
29 and 30 · 29 and 36 · 29 and 40 · 29 and 45 · 29 and 48 · 29 and 50 · 29 and 60 · 29 and 100
30 and 36 · 30 and 40 · 30 and 45 · 30 and 48 · 30 and 50 · 30 and 60 · 30 and 100
36 and 40 · 36 and 45 · 36 and 48 · 36 and 50 · 36 and 60 · 36 and 100
40 and 45 · 40 and 48 · 40 and 50 · 40 and 60 · 40 and 100
45 and 48 · 45 and 50 · 45 and 60 · 45 and 100
48 and 50 · 48 and 60 · 48 and 100