In order to have a 'common' factor - you need to have something to compare it to !
1, 5, 7, 35, 3529, 17645, 24703, 123515.
There is no common factor for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more numbers. For example, 17 is the GCF of 34, 51, and 102 because it is the largest number that is a factor common to all three numbers.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself. So you do not need to use the division ladder or any other method!
The GCF would be 3.
The GCF would be 10 !
This is what I would write: "What is the GCF of 32 and 64?"
The GCF is 1.
4 would be the GCF of those three numbers.
the GCF would be 5
It would be 18.
There is always a GCF, even if it's only 1.
GCF would be 5 and LCM is 50.