Factors of 4

The factors of 4 are 1, 2 and 4. That is 3 factors in total.

A factor of 4 is a whole number that divides 4 exactly, with no remainder. 4 is a composite number because it has factors other than 1 and itself.

Factor pairs of 4

Two numbers that multiply to give 4:

• 1 × 4 = 4
• 2 × 2 = 4

Prime factorization of 4

4 = 2 × 2 = 2². The prime factors of 4 are 2.

Quick facts about 4

• Is 4 prime? No.
• Even or odd: even.
• Sum of its factors: 1 + 2 + 4 = 7.
• 4 is a perfect square (2 × 2), so it has an odd number of factors.

Factors of nearby numbers

More about 4: 4 squared · square root of 4 · 4 in binary · 4 in Roman numerals.

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