Least Common Multiple of 21, 31, 28, 609

Least common multiple or lowest common denominator (lcd) can be calculated in three ways

• Least Common Multiple of 21, 31, 28, 609 by common division method
• Least Common Multiple of 21, 31, 28, 609 with GCF Formula

∴ So the LCM of the given numbers is 3 x 7 x 1 x 31 x 4 x 29 = 75516

The formula of LCM is LCM(a₁,a₂,a₃....,a_n) = ( a₁ × a₂ × a₃ × .... × a_n) / GCF(a₁,a₂,a₃....,a_n) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 21,31,28,609 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,31,28,609) = 1

common factors(in case of two or more numbers have common factors) = 147

GCF(21,31,28,609) x common factors =1 x 147 = 147

LCM(21,31,28,609) = ( 21 × 31 × 28 × 609 ) / 147

LCM(21,31,28,609) = 11100852 / 147

LCM(21,31,28,609) = 75516

∴ Least Common Multiple of 21,31,28,609 is 75516

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 63, 16, 23, 948
• LCM of 55, 71, 67, 769
• LCM of 64, 60, 35, 692
• LCM of 78, 18, 66, 563
• LCM of 22, 11, 98, 685

1. What is the LCM of 21, 31, 28, 609?

Answer: LCM of 21, 31, 28, 609 is 75516.

2. What are the Factors of 75516?

Answer: Factors of 75516 are . There are integers that are factors of 75516

3. How to Find the LCM of 21, 31, 28, 609 ?

Least Common Multiple of 21, 31, 28, 609.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCM(21, 31, 28, 609) = 2 x 2 x 3 x 7 x 29 x 31 = 75516.