1 and 27
Two: 9 and 27.
27 and 57 have two common factors: 1, 3.
The prime factor of 27 is 3. The prime factors of 26 are 2 and 13.
3, 9
It has four factors and they are: 1, 3, 9 and 27
9 and 3 do. 1, 3, 9, 27
To have common factors there must be at least two numbers.
27 and 10
Two of them.
It has more than two factors.
27 is not prime number because it has more than two factors. Factors of 27 are 1, 3, 9 and 27.
A prime number has exactly two factors, 1 and the number itself. The factors of 21 are 1, 3, 7, and 21, and the factors of 27 are 1, 3, 9, and 27. Since 21 and 27 have more than 2 factors, they are composite numbers.