Least Common Multiple of 21, 39, 686

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

• Least Common Multiple of 21, 39, 686 by common division method
• Least Common Multiple of 21, 39, 686 with GCF Formula

∴ So the LCM of the given numbers is 3 x 7 x 1 x 13 x 98 = 26754

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 21,39,686 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,39,686) = 1

common factors(in case of two or more numbers have common factors) = 21

GCF(21,39,686) x common factors =1 x 21 = 21

LCM(21,39,686) = ( 21 × 39 × 686 ) / 21

LCM(21,39,686) = 561834 / 21

LCM(21,39,686) = 26754

∴ Least Common Multiple of 21,39,686 is 26754

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

• LCM of 47, 85, 795
• LCM of 81, 23, 115
• LCM of 34, 68, 389
• LCM of 86, 24, 307
• LCM of 84, 75, 159

1. What is the LCM of 21, 39, 686?

Answer: LCM of 21, 39, 686 is 26754.

2. What are the Factors of 26754?

Answer: Factors of 26754 are . There are integers that are factors of 26754

3. How to Find the LCM of 21, 39, 686 ?

Least Common Multiple of 21, 39, 686.

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, 39, 686) = 2 x 3 x 7 x 7 x 7 x 13 = 26754.