Least Common Multiple of 28, 68, 84

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

• Least Common Multiple of 28, 68, 84 by common division method
• Least Common Multiple of 28, 68, 84 with GCF Formula

∴ So the LCM of the given numbers is 2 x 2 x 7 x 1 x 17 x 3 = 1428

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 28,68,84 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(28,68,84) = 4

common factors(in case of two or more numbers have common factors) = 28

GCF(28,68,84) x common factors =4 x 28 = 112

LCM(28,68,84) = ( 28 × 68 × 84 ) / 112

LCM(28,68,84) = 159936 / 112

LCM(28,68,84) = 1428

∴ Least Common Multiple of 28,68,84 is 1428

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

• LCM of 37, 54, 56
• LCM of 72, 88, 26
• LCM of 52, 97, 26
• LCM of 92, 68, 56
• LCM of 28, 56, 77

1. What is the LCM of 28, 68, 84?

Answer: LCM of 28, 68, 84 is 1428.

2. What are the Factors of 1428?

Answer: Factors of 1428 are . There are integers that are factors of 1428

3. How to Find the LCM of 28, 68, 84 ?

Least Common Multiple of 28, 68, 84.

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(28, 68, 84) = 2 x 2 x 3 x 7 x 17 = 1428.