Factors of 1028

2, 257. As a product: 2^2 × 257.

The factors of 1028 are 1, 2, 4, 257, 514, 1028. It has 6 factors.

Factors of 1028

Pick any whole number from 1 to 10,000.

1028 = 2^{2} \times 257

How to work it out

1
A factor of 1028 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1028 ≈ 32.06; 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.
$1028 = 2^{2} \times 257$
4
Add all the factors: 1 + 2 + 4 + 257 + 514 + 1028 = 1806. Without 1028 itself that is 778, so 1028 is a deficient number.

LaTeX source of the formulas on this page

\[ 1028 = 2^{2} \times 257 \]

What are the factors of 1028?

The factors of 1028 are 1, 2, 4, 257, 514, 1028. It has 6 factors.

What are the prime factors of 1028?

2, 257. As a product: $2^{2}$ × 257.

How many factors does 1028 have?

1028 has 6 factors (3 factor pairs).

What is the sum of the factors of 1028?

1806.

Is 1028 a prime number?

No. It is divisible by 2, so 1028 = 2 × 514.