What is the Least Common Multiple of 40824 and 40840?

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 40824 and 40840 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40824 and 40840, than apply into the LCM equation.

GCF(40824,40840) = 8
LCM(40824,40840) = ( 40824 × 40840) / 8
LCM(40824,40840) = 1667252160 / 8
LCM(40824,40840) = 208406520

Least Common Multiple (LCM) of 40824 and 40840 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40824 and 40840. First we will calculate the prime factors of 40824 and 40840.

Prime Factorization of 40824

Prime Factorization of 40840

Now multiplying the highest exponent prime factors to calculate the LCM of 40824 and 40840.

LCM(40824,40840) = 2³ × 3⁶ × 7¹ × 5¹ × 1021¹
LCM(40824,40840) = 208406520