Factors of 22
There are 4 factors of 22 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 22
1, 2, 11, 22
Factor pairs of 22
- 1 × 22
- 2 × 11
Prime factorization of 22
22 = 2 × 11
Number facts
- 22 is a composite number.
- 22 has 4 factors.
- 22 is not a perfect square.
- The sum of all factors of 22 is 36.
Divisibility rules that apply to 22
- 22 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 22 are calculated
To find the factors of 22, every whole number from 1 up to the square root of 22(about 4.69) is tested for even division. 22 is even, and it divides evenly by 2, 11. Written as a product of primes, 22 = 2 × 11, which confirms every factor above is a combination of those prime building blocks.
Frequently asked questions about 22
How many factors does 22 have?
22 has 4 factors: 1, 2, 11, 22.
Is 22 a prime number?
No. 22 is composite because it has factors other than 1 and itself.
What are the factor pairs of 22?
The factor pairs of 22 are 1 × 22, 2 × 11.
What is the prime factorization of 22?
The prime factorization of 22 is 2 × 11.