What is the Least Common Multiple of 40420 and 40436?

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 40420 and 40436 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40420 and 40436, than apply into the LCM equation.

GCF(40420,40436) = 4
LCM(40420,40436) = ( 40420 × 40436) / 4
LCM(40420,40436) = 1634423120 / 4
LCM(40420,40436) = 408605780

Least Common Multiple (LCM) of 40420 and 40436 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40420 and 40436. First we will calculate the prime factors of 40420 and 40436.

Prime Factorization of 40420

Prime Factorization of 40436

Now multiplying the highest exponent prime factors to calculate the LCM of 40420 and 40436.

LCM(40420,40436) = 2² × 5¹ × 43¹ × 47¹ × 11¹ × 919¹
LCM(40420,40436) = 408605780