Prime factorization of 18 = 2 x 3 x 3
Prime factorization of 45 = 3 x 3 x 5
Prime factorization of 63 = 3 x 3 x 7
It can be seen that 3 x 3 is the greatest number common in the factorization of 18, 45 and 63.
So, GCF is 3 x 3 = 9.
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9 is the greatest common factor of 18, 45 and 54.
The greatest common factor of 18 and 45 is 9.
The GCF is 9.
The greatest common factor of 45 and 225 is 15.The GCF is: 45
The greatest common factor of 26 and 45 is 1.