Factors of 2
There are 2 factors of 2 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 2
1, 2
Factor pairs of 2
- 1 × 2
Prime factorization of 2
2 = 2
Number facts
- 2 is a prime number.
- 2 has 2 factors.
- 2 is not a perfect square.
- The sum of all factors of 2 is 3.
Divisibility rules that apply to 2
- 2 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 2 are calculated
To find the factors of 2, every whole number from 1 up to the square root of 2(about 1.41) is tested for even division. 2 is even, and it turns out to be prime — no whole number other than 1 and 2 itself divides it evenly. Written as a product of primes, 2 = 2.
Frequently asked questions about 2
How many factors does 2 have?
2 has 2 factors: 1, 2.
Is 2 a prime number?
Yes. 2 is prime because its only factors are 1 and 2 itself.
What are the factor pairs of 2?
The factor pairs of 2 are 1 × 2.
What is the prime factorization of 2?
The prime factorization of 2 is 2.