1
The GCF is 1.
The highest common integral factor is 5, because 25 = 52, five is an integral factor of both 45 and 60, and 25 is not an integral factor of either 45 or 60.
the GCF of 45 and 60 is 15
The only common factor is 1.
The greatest common factor of the numbers 45 and 60 is 15.
For 45, 60, 90 the GCF = 15
15
15
15
15
15
The greatest factors of any positive integers are the integers themselves. The GCF of 28 and 60 is 4.