Least Common Multiple of 646, 21

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

• Least Common Multiple of 646, 21 by common division method
• Least Common Multiple of 646, 21 with GCF Formula

Given numbers has no common factors except 1. So, there LCM is their product i.e 13566

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 646,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(646,21) = 1

common factors(in case of two or more numbers have common factors) = 1

GCF(646,21) x common factors =1 x 1 = 1

LCM(646,21) = ( 646 × 21 ) / 1

LCM(646,21) = 13566 / 1

LCM(646,21) = 13566

∴ Least Common Multiple of 646,21 is 13566

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

• LCM of 548, 59
• LCM of 293, 35
• LCM of 493, 98
• LCM of 980, 44
• LCM of 169, 86

1. What is the LCM of 646, 21?

Answer: LCM of 646, 21 is 13566.

2. What are the Factors of 13566?

Answer: Factors of 13566 are . There are integers that are factors of 13566

3. How to Find the LCM of 646, 21 ?

Least Common Multiple of 646, 21.

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(646, 21) = 2 x 3 x 7 x 17 x 19 = 13566.