Factors of 291

The factors of 291 are 1, 3, 97, 291. It has 4 factors.

Factors of 291

Pick any whole number from 1 to 10,000.

291 = 3 \times 97

How to work it out

1
A factor of 291 is a whole number that divides it with nothing left over. You only need to test the numbers up to √291 ≈ 17.06; 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.
$291 = 3 \times 97$
4
Add all the factors: 1 + 3 + 97 + 291 = 392. Without 291 itself that is 101, so 291 is a deficient number.

LaTeX source of the formulas on this page

\[ 291 = 3 \times 97 \]

Factor	Pairs with	Product
1	291	1 × 291 = 291
3	97	3 × 97 = 291

What are the factors of 291?

The factors of 291 are 1, 3, 97, 291. It has 4 factors.

What are the prime factors of 291?

3, 97. As a product: 3 × 97.

How many factors does 291 have?

291 has 4 factors (2 factor pairs).

What is the sum of the factors of 291?

392.

Is 291 a prime number?

No. It is divisible by 3, so 291 = 3 × 97.