A common factor is a factor both numbers can be evenly divided by.
In this case it is 20.
20/20 = 1
80/20 = 4
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The Greatest Common Factor (GCF) of 80 and 100 is 20.
The GCF is 10.
60=2x2x3x580=2x2x2x2x5GCF=2x2x5=20
lcm(16, 20) is 80.There is NO greatest common multiple, for whatever multiple of their LCM you give, I can always add another 80 and get an even greater common multiple.Mefinx you meant their greatest common FACTOR, which is 4.
The least common factor is: 1