Factors of 57

The factors of 57 are 1, 3, 19, 57. It has 4 factors.

Factors of 57

Pick any whole number from 1 to 10,000.

57 = 3 \times 19

How to work it out

1
A factor of 57 is a whole number that divides it with nothing left over. You only need to test the numbers up to √57 ≈ 7.55; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 4 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$57 = 3 \times 19$
4
Add all the factors: 1 + 3 + 19 + 57 = 80. Without 57 itself that is 23, so 57 is a deficient number.

LaTeX source of the formulas on this page

\[ 57 = 3 \times 19 \]

Factor	Pairs with	Product
1	57	1 × 57 = 57
3	19	3 × 19 = 57

What are the factors of 57?

The factors of 57 are 1, 3, 19, 57. It has 4 factors.

What are the prime factors of 57?

3, 19. As a product: 3 × 19.

How many factors does 57 have?

57 has 4 factors (2 factor pairs).

What is the sum of the factors of 57?

80.

Is 57 a prime number?

No. It is divisible by 3, so 57 = 3 × 19.