Greatest Common Divisor:
This should yield 2 as the largest common factor.
Least Common Multiple:
Since 2 is the GCD, dividing 18 by 2 makes 9, 20 by 2 = 10, and multiplying the values together yields 180.
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The greatest common multiple of 8 and 20 is 4.
6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60 20: 20, 40, 60 The LCM for 6 and 20 is 60. If you need help with finding the least common multiple (LCM) or greatest common factor (GCF) for some numbers then, on your computer, go to your search engine and type in "LCM calculator" to help you find the least common multiple or "GCF calculator" to help you find the greatest common factor.
The Greatest Common Factor (GCF) is: 4 .The greatest common multiple of any set of integers is infinite.
A multiple of a number x is xy where y is any integer. For example, multiples of 3 include 12 (3x4) 15 (3x5) and 36 (3x12) A common multiple of x and z is any number that can be expressed as a multiple of x or z. For instance 36 is a common multiple of 3 and 4, as it is a multiple of both. The term "greatest" means the highest valued number. For instance, the greatest out of 4, 68 and 20 is 68. It makes no sense to speak of a "greatest common multiple" as common multiples will go up to infinity. If I have a common multiple m, then 2m, 3m, 4m and so on will also be common multiples.
The greatest common factor of 28 and 20 is 4.