Factors of 12

The factors of 12 are 1, 2, 3, 4, 6, 12. It has 6 factors.

Factors of 12

Pick any whole number from 1 to 10,000.

12 = 2^{2} \times 3

How to work it out

1
A factor of 12 is a whole number that divides it with nothing left over. You only need to test the numbers up to √12 ≈ 3.46; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 6 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$12 = 2^{2} \times 3$
4
Add all the factors: 1 + 2 + 3 + 4 + 6 + 12 = 28. Without 12 itself that is 16, so 12 is an abundant number.

LaTeX source of the formulas on this page

\[ 12 = 2^{2} \times 3 \]

What are the factors of 12?

The factors of 12 are 1, 2, 3, 4, 6, 12. It has 6 factors.

What are the prime factors of 12?

2, 3. As a product: $2^{2}$ × 3.

How many factors does 12 have?

12 has 6 factors (3 factor pairs).

What is the sum of the factors of 12?

28.

Is 12 a prime number?

No. It is divisible by 2, so 12 = 2 × 6.