The GCF is 9.
Since 21 is a factor of 63, it is automatically the GCF of this problem.
The only common factor of 31 and 63 is 1.
There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
The greatest common factor of 3 and 63 is 3.
The Greatest Common Factor of 175 and 63 is 7.
The greatest common factor of 63 and 200 is 1.
The greatest common factor of 63 and 114 is 3.
The greatest common factor of 63 and 104 is 1.
The greatest common factor of 63 and 83 is 1.
Since 9 is a factor of 63, all of its factors are common.
The greatest common factor of 14 and 63 is 7
The greatest common factor is 63