What is the least common factor of 72 and 91?

To answer the question, "What is the least common factor of 72 and 91?", we will start by defining and listing factors of 72 and 91.

Factors of 72 are all the integers that when multiplied by another integer equal 72. Likewise, factors of 91 are all the integers that when multiplied by another integer equal 91.

The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72.

The factors 91 are 1, 7, 13, and 91.

When you ask, "What is the least common factor of 72 and 91?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 72 and 91 have in common is 1.

Note that all integers, such as 72 and 91, have 1 as one of its factors. Thus, the answer to the least common factor of any two integers greater than 0 will always be 1.

Now that you know the least common factor of 72 and 91, you may also be interested in knowing the greatest common factor of 72 and 91. The greatest factor 72 and 91 have in common, per the list above, is 1.

When you asked for the least common factor of 72 and 91, did you mean least common multiple? If so, the least common multiple of 72 and 91 is 6552.

Least Common Factor Calculator
Need the least common factor for another set of numbers? Please submit your numbers here:

What is the least common factor of 72 and 92?
Go here for the next least common factor problem on our list.