4, 9, 16 and 25 are square numbers.
They are the products of two distinct prime numbers. Along with one and the numbers themselves, they all total four factors.
The highest common factor of all four numbers is 7
6, 8 and 10 are some numbers with four factors.
Four factors in common.
The common factors are: 1, 2
Four only has three factors: 1, 2 and 4. For any of them to be a GCF, they need to be compared to another set of numbers.
Four common factors.
Four
The common factors are: 1, 2, 3, 6.
47 does not have 4 prime numbers (factors or divisors).
The four common factors are: 1, 3, 17, 51.
The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.