The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4. The largest is 4, so we say that the GCF of 12, 20, and 24 is 4.
Therefore,
Let us list all the prime factors of
Thus,
Let us now list out the common factors and multiply them together.
Hence, the answer is