What is the Least Common Multiple of 21070 and 21086?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 21070 and 21086 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21070 and 21086, than apply into the LCM equation.

GCF(21070,21086) = 2
LCM(21070,21086) = ( 21070 × 21086) / 2
LCM(21070,21086) = 444282020 / 2
LCM(21070,21086) = 222141010

Least Common Multiple (LCM) of 21070 and 21086 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21070 and 21086. First we will calculate the prime factors of 21070 and 21086.

Prime Factorization of 21070

Prime Factorization of 21086

Now multiplying the highest exponent prime factors to calculate the LCM of 21070 and 21086.

LCM(21070,21086) = 2¹ × 5¹ × 7² × 43¹ × 13¹ × 811¹
LCM(21070,21086) = 222141010