Least Common Multiple of 42, 20, 457

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

• Least Common Multiple of 42, 20, 457 by common division method
• Least Common Multiple of 42, 20, 457 with GCF Formula

∴ So the LCM of the given numbers is 2 x 21 x 10 x 457 = 191940

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 42,20,457 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(42,20,457) = 1

common factors(in case of two or more numbers have common factors) = 2

GCF(42,20,457) x common factors =1 x 2 = 2

LCM(42,20,457) = ( 42 × 20 × 457 ) / 2

LCM(42,20,457) = 383880 / 2

LCM(42,20,457) = 191940

∴ Least Common Multiple of 42,20,457 is 191940

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

• LCM of 12, 43, 424
• LCM of 44, 42, 410
• LCM of 19, 90, 745
• LCM of 18, 87, 712
• LCM of 15, 69, 323

1. What is the LCM of 42, 20, 457?

Answer: LCM of 42, 20, 457 is 191940.

2. What are the Factors of 191940?

Answer: Factors of 191940 are . There are integers that are factors of 191940

3. How to Find the LCM of 42, 20, 457 ?

Least Common Multiple of 42, 20, 457.

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(42, 20, 457) = 2 x 2 x 3 x 5 x 7 x 457 = 191940.