How to find the Factors of 18
- 18 is a composite number.
- Prime factorization: 18 = 2x3x3, which can be written 18 = 21x32
- The exponents in the prime factorization are 1 and 2. Adding one to each exponent and multiplying we get (1 + 1)(2 + 1) = 2x3 = 6. Therefore 18 has exactly 6 factors.
- The factors of 18 are: 1, 2, 3, 6, 9 and 18
- Factor pairs of 18 are: 1x18, 2x9 and 3x6
- 18 has at least one exponent greater than 1 in its prime factorization so √18 can be simplified. Taking this into account, we get √18 = 3x√2