The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40
The factors of 48 are:
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
The common factors are:
1, 2, 4, 8
The Greatest Common Factor:
GCF = 8
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The GCF is 1.
The GCF is 4.
Since 44 is a factor of 132, it is automatically the GCF.
The GCF of these numbers is 40.
The GCF is 4.