Least Common Multiple of 21, 81, 378

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

• Least Common Multiple of 21, 81, 378 by common division method
• Least Common Multiple of 21, 81, 378 with GCF Formula

∴ So the LCM of the given numbers is 3 x 3 x 3 x 7 x 1 x 3 x 2 = 1134

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 21,81,378 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,81,378) = 3

common factors(in case of two or more numbers have common factors) = 189

GCF(21,81,378) x common factors =3 x 189 = 567

LCM(21,81,378) = ( 21 × 81 × 378 ) / 567

LCM(21,81,378) = 642978 / 567

LCM(21,81,378) = 1134

∴ Least Common Multiple of 21,81,378 is 1134

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

• LCM of 59, 20, 307
• LCM of 65, 81, 622
• LCM of 18, 50, 258
• LCM of 72, 57, 561
• LCM of 83, 67, 505

1. What is the LCM of 21, 81, 378?

Answer: LCM of 21, 81, 378 is 1134.

2. What are the Factors of 1134?

Answer: Factors of 1134 are . There are integers that are factors of 1134

3. How to Find the LCM of 21, 81, 378 ?

Least Common Multiple of 21, 81, 378.

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, 81, 378) = 2 x 3 x 3 x 3 x 3 x 7 = 1134.