What is the least common factor of 9 and 87?

To answer the question, "What is the least common factor of 9 and 87?", we will start by defining and listing factors of 9 and 87.

Factors of 9 are all the integers that when multiplied by another integer equal 9. Likewise, factors of 87 are all the integers that when multiplied by another integer equal 87.

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

The factors 87 are 1, 3, 29, and 87.

When you ask, "What is the least common factor of 9 and 87?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 9 and 87 have in common is 1.

Note that all integers, such as 9 and 87, 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 87, you may also be interested in knowing the greatest common factor of 9 and 87. The greatest factor 9 and 87 have in common, per the list above, is 3.

When you asked for the least common factor of 9 and 87, did you mean least common multiple? If so, the least common multiple of 9 and 87 is 261.

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