LCM for 6 and 20
What's the Least Common Multiple (LCM) of 6 and 20?
(Sixty)
Finding LCM for 6 and 20 using GCF's of these numbers
The first method to find LCM for numbers 6 and 20 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 6 and 20 is 2, so
LCM = (6 × 20) ÷ 2
LCM = 120 ÷ 2
LCM = 60
Finding LCM for 6 and 20 by Listing Multiples
The second method to find LCM for numbers 6 and 20 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72
Multiples of 20: 20, 40, 60, 80, 100
So the LCM for 6 and 20 is 60
Finding LCM for 6 and 20 by Prime Factorization
Another method to find LCM for numbers 6 and 20 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 6: 2, 3 (exponent form: 21, 31)
All Prime Factors of 20: 2, 2, 5 (exponent form: 22, 51)
22 × 31 × 51 = 60
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LCM Table
About "Least Common Multiple" Calculator
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers