What is the least common factor of 9 and 57?

To answer the question, "What is the least common factor of 9 and 57?", we will start by defining and listing factors of 9 and 57.

Factors of 9 are all the integers that when multiplied by another integer equal 9. Likewise, factors of 57 are all the integers that when multiplied by another integer equal 57.

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

The factors 57 are 1, 3, 19, and 57.

When you ask, "What is the least common factor of 9 and 57?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 9 and 57 have in common is 1.

Note that all integers, such as 9 and 57, 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 57, you may also be interested in knowing the greatest common factor of 9 and 57. The greatest factor 9 and 57 have in common, per the list above, is 3.

When you asked for the least common factor of 9 and 57, did you mean least common multiple? If so, the least common multiple of 9 and 57 is 171.

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