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 GCF is 36
504, 1008, 1512 and 2016
the highest common factors of 8 and 12 is 4!!
The highest common factors of 65 and 185 is 5.
-1005
The highest common factor is 2
The Highest Common Factor is: 8
The highest common factors are 1 and 2 .They are also the lowest common factors.
The common factors of 36 and 27 are 1, 3 & 9; the highest common factor is 9.
The lowest common multiple of 63 and 112 is 1008. 16*63 = 1008 9*112 =1008
The highest common factor would have to be 6.
Common factors of 17 and 50 are: 1.