The least common factor of any set of integers is 1.
The least common factor of any set of positive integers is 1.
The least common factor is 1. (The least common factor of any two or more positive integers is always 1.)
The least common factor of 7 and 14 is 1. The least (lowest) common factor of two positive integers is always 1.
The least common factor of any two positive integers is 1.
The least common factor is 1. (The least common factor of any two or more positive integers is always 1.)
The least common factor of any two or more positive integers is always 1
The least common factor of any set of integers is 1.
The least common factor of any set of positive integers is 1.
The least common factor of any set of positive integers is 1.
It is not possible to give a sensible answer to this question. The word "common" in the expression implies that it is a factor which is COMMON to two or more integers. Furthermore, the least common factor of any set of integers is 1.
The least common factor of any two positive integers is 1.