Factors of 856

2, 107. As a product: 2^3 × 107.

The factors of 856 are 1, 2, 4, 8, 107, 214, 428, 856. It has 8 factors.

Factors of 856

Pick any whole number from 1 to 10,000.

856 = 2^{3} \times 107

How to work it out

1
A factor of 856 is a whole number that divides it with nothing left over. You only need to test the numbers up to √856 ≈ 29.26; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 8 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$856 = 2^{3} \times 107$
4
Add all the factors: 1 + 2 + 4 + 8 + 107 + 214 + 428 + 856 = 1620. Without 856 itself that is 764, so 856 is a deficient number.

LaTeX source of the formulas on this page

\[ 856 = 2^{3} \times 107 \]

What are the factors of 856?

The factors of 856 are 1, 2, 4, 8, 107, 214, 428, 856. It has 8 factors.

What are the prime factors of 856?

2, 107. As a product: $2^{3}$ × 107.

How many factors does 856 have?

856 has 8 factors (4 factor pairs).

What is the sum of the factors of 856?

1620.

Is 856 a prime number?

No. It is divisible by 2, so 856 = 2 × 428.