Factors of 1261

The factors of 1261 are 1, 13, 97, 1261. It has 4 factors.

Factors of 1261

Pick any whole number from 1 to 10,000.

1261 = 13 \times 97

How to work it out

1
A factor of 1261 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1261 ≈ 35.51; 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.
$1261 = 13 \times 97$
4
Add all the factors: 1 + 13 + 97 + 1261 = 1372. Without 1261 itself that is 111, so 1261 is a deficient number.

LaTeX source of the formulas on this page

\[ 1261 = 13 \times 97 \]

Factor	Pairs with	Product
1	1261	1 × 1261 = 1261
13	97	13 × 97 = 1261

What are the factors of 1261?

The factors of 1261 are 1, 13, 97, 1261. It has 4 factors.

What are the prime factors of 1261?

13, 97. As a product: 13 × 97.

How many factors does 1261 have?

1261 has 4 factors (2 factor pairs).

What is the sum of the factors of 1261?

1372.

Is 1261 a prime number?

No. It is divisible by 13, so 1261 = 13 × 97.