What is the least common factor of 74 and 21?

To answer the question, "What is the least common factor of 74 and 21?", we will start by defining and listing factors of 74 and 21.

Factors of 74 are all the integers that when multiplied by another integer equal 74. Likewise, factors of 21 are all the integers that when multiplied by another integer equal 21.

The factors of 74 are 1, 2, 37, and 74.

The factors 21 are 1, 3, 7, and 21.

When you ask, "What is the least common factor of 74 and 21?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 74 and 21 have in common is 1.

Note that all integers, such as 74 and 21, 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 74 and 21, you may also be interested in knowing the greatest common factor of 74 and 21. The greatest factor 74 and 21 have in common, per the list above, is 1.

When you asked for the least common factor of 74 and 21, did you mean least common multiple? If so, the least common multiple of 74 and 21 is 1554.

Least Common Factor Calculator
Need the least common factor for another set of numbers? Please submit your numbers here:

What is the least common factor of 74 and 22?
Go here for the next least common factor problem on our list.