What is the Least Common Multiple of 31580 and 31590?

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 31580 and 31590 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31580 and 31590, than apply into the LCM equation.

GCF(31580,31590) = 10
LCM(31580,31590) = ( 31580 × 31590) / 10
LCM(31580,31590) = 997612200 / 10
LCM(31580,31590) = 99761220

Least Common Multiple (LCM) of 31580 and 31590 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31580 and 31590. First we will calculate the prime factors of 31580 and 31590.

Prime Factorization of 31580

Prime Factorization of 31590

Now multiplying the highest exponent prime factors to calculate the LCM of 31580 and 31590.

LCM(31580,31590) = 2² × 5¹ × 1579¹ × 3⁵ × 13¹
LCM(31580,31590) = 99761220