The least common factor is 1 but the highest common factor is 4
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The least common factor of any set of positive integers is 1.
The GCF is 4. The LCM is 60.
The least common factor of any set of integers is 1.
The least common factor is 1. (The least common factor of any two or more positive integers is always 1.)
The greatest common factor of 12 and 20 is 4