Factors of 1000

The factors of 1000 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500 and 1000. That is 16 factors in total.

A factor of 1000 is a whole number that divides 1000 exactly, with no remainder. 1000 is a composite number because it has factors other than 1 and itself.

Factor pairs of 1000

Two numbers that multiply to give 1000:

1 × 1000 = 1000
2 × 500 = 1000
4 × 250 = 1000
5 × 200 = 1000
8 × 125 = 1000
10 × 100 = 1000
20 × 50 = 1000
25 × 40 = 1000

Prime factorization of 1000

1000 = 2 × 2 × 2 × 5 × 5 × 5 = 2³ × 5³. The prime factors of 1000 are 2 and 5.

Quick facts about 1000

Is 1000 prime? No.
Even or odd: even.
Sum of its factors: 1 + 2 + 4 + 5 + 8 + 10 + 20 + 25 + 40 + 50 + 100 + 125 + 200 + 250 + 500 + 1000 = 2,340.

Factors of nearby numbers

Number	Factors
400	15 factors
500	1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500
600	24 factors
720	30 factors

More about 1000: 1000 squared · square root of 1000 · 1000 in binary · 1000 in Roman numerals.

Another number? Try the prime number checker, the GCF and LCM calculator or see all factor lists.