There is no such thing as a "greatest common multiple" of a set of numbers. Once you find ANY common multiple (for example, by multiplying the two numbers), that common multiple times 2, or times 3, etc. will also be a common multiple.
For many practical problems, you are usually required to find either:
Least common multiple of 24 36 and 64 is 576.
The Least Common Multiple (LCM) for 9 36 64 is 576.
The Least Common Multiple (LCM) for 64 24 36 is 576.
The Greatest Common Factor of 24, 36, 64: 4
The GCF of 36 and 64 is 4. 36/64 = 9/16
The greatest common multiple of any set of integers is infinite.
The GCF of 18, 36, and 64 is 2
4
The greatest common multiple of any set of integers is infinite.
The Least Common Multiple (LCM) of 36, 64, and 112 is 4032.
Least Common Multiple (LCM) for 24 36 64 is 576.
The greatest common multiple is an infinite amount and not very practical for problem solving.