The GCF is 1.
The greatest common factor (GCF) for twenty-one and seventy-two is three.
Three
The factors of six are one, two, three, and six. The factors of twenty six are one, two, thirteen, and twenty six. Two is the only factor of six that is also a factor of twenty six besides one. Therefore, two is the greatest common factor of six and twenty six.
The greatest common factor is three.
Any three.
The greatest common factor for the numbers 3 and 37 is 1.
The greatest common factor of 15 and 18 is three.
Whatever isn't a factor of 120.
The greatest common factor is three.
17 is the greatest common factor - it goes into 17 once, and 51 three times.
The answer is simply three.
Three