Factors of 77
There are 4 factors of 77 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 77
1, 7, 11, 77
Factor pairs of 77
- 1 × 77
- 7 × 11
Prime factorization of 77
77 = 7 × 11
Number facts
- 77 is a composite number.
- 77 has 4 factors.
- 77 is not a perfect square.
- The sum of all factors of 77 is 96.
Check another number
How the factors of 77 are calculated
To find the factors of 77, every whole number from 1 up to the square root of 77(about 8.77) is tested for even division. 77 is odd, and it divides evenly by 7, 11. Written as a product of primes, 77 = 7 × 11, which confirms every factor above is a combination of those prime building blocks.
Frequently asked questions about 77
How many factors does 77 have?
77 has 4 factors: 1, 7, 11, 77.
Is 77 a prime number?
No. 77 is composite because it has factors other than 1 and itself.
What are the factor pairs of 77?
The factor pairs of 77 are 1 × 77, 7 × 11.
What is the prime factorization of 77?
The prime factorization of 77 is 7 × 11.