What is the least common factor of 4 and 78?

To answer the question, "What is the least common factor of 4 and 78?", we will start by defining and listing factors of 4 and 78.

Factors of 4 are all the integers that when multiplied by another integer equal 4. Likewise, factors of 78 are all the integers that when multiplied by another integer equal 78.

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

The factors 78 are 1, 2, 3, 6, 13, 26, 39, and 78.

When you ask, "What is the least common factor of 4 and 78?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 4 and 78 have in common is 1.

Note that all integers, such as 4 and 78, 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 78, you may also be interested in knowing the greatest common factor of 4 and 78. The greatest factor 4 and 78 have in common, per the list above, is 2.

When you asked for the least common factor of 4 and 78, did you mean least common multiple? If so, the least common multiple of 4 and 78 is 156.

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