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The GCF and the LCM of 20 and 36 are 4 and 180, respectively.
To calculate the GCF of a series of numbers, you need to first figure out the prime factors of each of the numbers.
The prime factors of 20 are 2, 2, and 5
The prime factors of 36 are 2, 2, 3, and 3
The two numbers share 2 and 2 as prime factors so the GCF = 2 x 2 = 4
To calculate the Least Common Multiple (LCM), you need to first figure out the prime factors of each of the numbers, and then create a number using all the factors (but only using shared factors once).
In this instance the factors required are 2, 2, 3, 3, and 5
These, when multiplied together, give an product of 180
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What is the greatest common multiple of 15 and 45 and the least common multiple of 15 and 45?
The Greatest Common Factor of 15, 45: 15The Least Common Multiple of 15, 45: 45
Is the least common multiple of two numbers always divisible by the greatest common factor of the two numbers?
Yes, the least common multiple of two numbers is always divisible by those numbers' greatest common factor.
What is the least common multiple of 28 and 48?
The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 28 and 48 is 4. Therefore, the least common multiple is 28 x 48 ÷ 4 = 336.
What is the least common multiple of 20 and 52?
The LCM of 20 and 52 is 260. The least common multiple is the product of the two numbers divided by their greatest common factor. The greatest common factor of 20 and 52 is 4, so their least common multiple is 20 x 52 ÷ 4 = 260.
What is the product of the greatest common factor and least common multiple of 6 and 9?
54
What is the greatest common factor and the least common multiple of 18 and 20?
The greatest common factor is 2 and the least common multiple is also 2.
What is the greatest common factor and least common multiple of 63 and 77?
Greatest common factor (GCF) =7 Least common multiple (LCM) =693
What are the greatest common factor and least common multiple of 20 and 120?
The greatest common factor of 20 and 120 is 20, and the least common multiple of 20 and 120 is 120
What is the greatest common factor and least common multiple of 32 and 49?
The Greatest Common Factor (GCF) of (32,49) is 1The Least Common Multiple (LCM) of (32,49) is 1568
What is the greatest common factor and least common multiple of 4 and 32?
The greatest common factor(gcf) of 4 and 32 is 4. The least common multiple of 4 and 32 is 32.
What is the greatest common multiple of 39 and 35?
The greatest common multiple is infinitely large, the least common multiple is 1365, the greatest common factor is 1.
What is the least common multiple of 64 and 56?
The least common multiple is the product of the two numbers divided by their greatest common factor. Their greatest common factor is 8, so the least common multiple is 56 x 64 ÷ 8 = 448.
What is the greatest common factor and least common multiple of 15?
Itself
What is the least common multiple of 44 and 60?
The least common multiple is the product of the two numbers divided by their greatest common factor. The greatest common factor of 44 and 60 is 4, so the least common multiple is 44 x 60 ÷ 4 = 660.
How do you know whether to use the greatest common factor or the least common multiple to solve a problem?
the least common multiple is what the numbers you are using divide into. e.g. 3 and 6 have 12 as the common factor. the greatest common factor is what divides into your numbers. 6 and 9 have 3 as the greatest common factor
What is the greatest common multiple of 15 and 45 and the least common multiple of 15 and 45?
The Greatest Common Factor of 15, 45: 15The Least Common Multiple of 15, 45: 45
What is the least common multiple of 5 and 23?
The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 5 and 23 is 1. (See related question "What is the greatest common factor of 5 and 23?" for this calculation.) So, the least common multiple is 5 x 23 ÷ 1 = 115.
