The least common factor of any set of positive integers is 1.
The GCF is 12.
The least common factor of 54 and 60 is 1, as is the least common factor of any set of numbers. The highest common factor of 54 and 60 is 6
The least common factor is: 1
The least common factor of any set of numbers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of integers is 1.
Are you sure you don't mean least common multiple or greatest common factor? The least common factor, I think, would be 1.