What is the Least Common Multiple of 20858 and 20862?

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 20858 and 20862 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20858 and 20862, than apply into the LCM equation.

GCF(20858,20862) = 2
LCM(20858,20862) = ( 20858 × 20862) / 2
LCM(20858,20862) = 435139596 / 2
LCM(20858,20862) = 217569798

Least Common Multiple (LCM) of 20858 and 20862 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20858 and 20862. First we will calculate the prime factors of 20858 and 20862.

Prime Factorization of 20858

Prime Factorization of 20862

Now multiplying the highest exponent prime factors to calculate the LCM of 20858 and 20862.

LCM(20858,20862) = 2¹ × 10429¹ × 3² × 19¹ × 61¹
LCM(20858,20862) = 217569798