Factors of 64
There are 7 factors of 64 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 64
1, 2, 4, 8, 16, 32, 64
Factor pairs of 64
- 1 × 64
- 2 × 32
- 4 × 16
- 8 × 8
Prime factorization of 64
64 = 2⁶
Number facts
- 64 is a composite number.
- 64 has 7 factors.
- 64 is a perfect square.
- The sum of all factors of 64 is 127.
Divisibility rules that apply to 64
- 64 is divisible by 2 because it ends in an even digit (0, 2, 4, 6, or 8).
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How the factors of 64 are calculated
To find the factors of 64, every whole number from 1 up to the square root of 64(about 8.00) is tested for even division. 64 is even, and it divides evenly by 2, 4, 8, 16, among others. Written as a product of primes, 64 = 2⁶. 64 is also a perfect square, which is why one of its factor pairs is a number multiplied by itself.
Frequently asked questions about 64
How many factors does 64 have?
64 has 7 factors: 1, 2, 4, 8, 16, 32, 64.
Is 64 a prime number?
No. 64 is composite because it has factors other than 1 and itself.
What are the factor pairs of 64?
The factor pairs of 64 are 1 × 64, 2 × 32, 4 × 16, 8 × 8.
What is the prime factorization of 64?
The prime factorization of 64 is 2⁶.