Factors of 77

The factors of 77 are 1, 7, 11, 77. It has 4 factors.

Factors of 77

Pick any whole number from 1 to 10,000.

77 = 7 \times 11

How to work it out

1
A factor of 77 is a whole number that divides it with nothing left over. You only need to test the numbers up to √77 ≈ 8.77; 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.
$77 = 7 \times 11$
4
Add all the factors: 1 + 7 + 11 + 77 = 96. Without 77 itself that is 19, so 77 is a deficient number.

LaTeX source of the formulas on this page

\[ 77 = 7 \times 11 \]

Factor	Pairs with	Product
1	77	1 × 77 = 77
7	11	7 × 11 = 77

What are the factors of 77?

The factors of 77 are 1, 7, 11, 77. It has 4 factors.

What are the prime factors of 77?

7, 11. As a product: 7 × 11.

How many factors does 77 have?

77 has 4 factors (2 factor pairs).

What is the sum of the factors of 77?

96.

Is 77 a prime number?

No. It is divisible by 7, so 77 = 7 × 11.