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What is the Least Common Multiple of 38620 and 38631?

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 (LCM) of 38620 and 38631 is 1491929220.

LCM(38620,38631) = 1491929220

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Least Common Multiple of 38620 and 38631 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38620 and 38631, than apply into the LCM equation.

GCF(38620,38631) = 1
LCM(38620,38631) = ( 38620 × 38631) / 1
LCM(38620,38631) = 1491929220 / 1
LCM(38620,38631) = 1491929220

Least Common Multiple (LCM) of 38620 and 38631 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38620 and 38631. First we will calculate the prime factors of 38620 and 38631.

Prime Factorization of 38620

Prime factors of 38620 are 2, 5, 1931. Prime factorization of 38620 in exponential form is:

38620 = 22 × 51 × 19311

Prime Factorization of 38631

Prime factors of 38631 are 3, 79, 163. Prime factorization of 38631 in exponential form is:

38631 = 31 × 791 × 1631

Now multiplying the highest exponent prime factors to calculate the LCM of 38620 and 38631.

LCM(38620,38631) = 22 × 51 × 19311 × 31 × 791 × 1631
LCM(38620,38631) = 1491929220