What is the least common factor of 4 and 30?

To answer the question, "What is the least common factor of 4 and 30?", we will start by defining and listing factors of 4 and 30.

Factors of 4 are all the integers that when multiplied by another integer equal 4. Likewise, factors of 30 are all the integers that when multiplied by another integer equal 30.

The factors of 4 are 1, 2, and 4.

The factors 30 are 1, 2, 3, 5, 6, 10, 15, and 30.

When you ask, "What is the least common factor of 4 and 30?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 4 and 30 have in common is 1.

Note that all integers, such as 4 and 30, 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 4 and 30, you may also be interested in knowing the greatest common factor of 4 and 30. The greatest factor 4 and 30 have in common, per the list above, is 2.

When you asked for the least common factor of 4 and 30, did you mean least common multiple? If so, the least common multiple of 4 and 30 is 60.

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