Least Common Multiple of 81, 81, 21, 39

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

• Least Common Multiple of 81, 81, 21, 39 by common division method
• Least Common Multiple of 81, 81, 21, 39 with GCF Formula

∴ So the LCM of the given numbers is 3 x 3 x 3 x 3 x 1 x 1 x 7 x 13 = 7371

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 81,81,21,39 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(81,81,21,39) = 3

common factors(in case of two or more numbers have common factors) = 243

GCF(81,81,21,39) x common factors =3 x 243 = 729

LCM(81,81,21,39) = ( 81 × 81 × 21 × 39 ) / 729

LCM(81,81,21,39) = 5373459 / 729

LCM(81,81,21,39) = 7371

∴ Least Common Multiple of 81,81,21,39 is 7371

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

• LCM of 32, 54, 25, 29
• LCM of 73, 53, 41, 18
• LCM of 34, 76, 98, 49
• LCM of 99, 76, 55, 30
• LCM of 19, 43, 40, 92

1. What is the LCM of 81, 81, 21, 39?

Answer: LCM of 81, 81, 21, 39 is 7371.

2. What are the Factors of 7371?

Answer: Factors of 7371 are . There are integers that are factors of 7371

3. How to Find the LCM of 81, 81, 21, 39 ?

Least Common Multiple of 81, 81, 21, 39.

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(81, 81, 21, 39) = 3 x 3 x 3 x 3 x 7 x 13 = 7371.