What is the least common factor of 9 and 72?

To answer the question, "What is the least common factor of 9 and 72?", we will start by defining and listing factors of 9 and 72.

Factors of 9 are all the integers that when multiplied by another integer equal 9. Likewise, factors of 72 are all the integers that when multiplied by another integer equal 72.

The factors of 9 are 1, 3, and 9.

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

When you ask, "What is the least common factor of 9 and 72?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 9 and 72 have in common is 1.

Note that all integers, such as 9 and 72, 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 9 and 72, you may also be interested in knowing the greatest common factor of 9 and 72. The greatest factor 9 and 72 have in common, per the list above, is 9.

When you asked for the least common factor of 9 and 72, did you mean least common multiple? If so, the least common multiple of 9 and 72 is 72.

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