16 has only one prime factor: 2
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The prime factor of 16 is 2. For it to be common, you'll need to compare it to another set of prime factors.
The factors of 16 are: 1, 2, 4, 8, and 16. The prime factors of 16 are: 2. The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, and 56. The prime factors of 56 are: 2 and 7. The factors of 48 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48. The prime factors of 48 are: 2 and 3.
The factors of 16 are 1, 2, 4, 8 and 16.The prime factor of 16 is 2.None of them are negative.
When two or more numbers have one or more of the same primes as factors, those prime factors are called common prime factors. For example, the prime factors of 6 are 2 and 3, and the prime factors of 21 are 3 and 7, so 3 is a common prime factor of 6 and 21.
The prime factors of 18 are 2, 3, and 3. The prime factors of 70 are 2, 5, and 7. The prime factors that 18 and 70 have in common are a single 2.
The factors of 16 are 1, 2, 4, 8 and 16. For them to be common, they need to be compared to another set of factors.