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What is the Least Common Multiple of 18684 and 18690?

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 18684 and 18690 is 58200660.

LCM(18684,18690) = 58200660

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Least Common Multiple of 18684 and 18690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18684 and 18690, than apply into the LCM equation.

GCF(18684,18690) = 6
LCM(18684,18690) = ( 18684 × 18690) / 6
LCM(18684,18690) = 349203960 / 6
LCM(18684,18690) = 58200660

Least Common Multiple (LCM) of 18684 and 18690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18684 and 18690. First we will calculate the prime factors of 18684 and 18690.

Prime Factorization of 18684

Prime factors of 18684 are 2, 3, 173. Prime factorization of 18684 in exponential form is:

18684 = 22 × 33 × 1731

Prime Factorization of 18690

Prime factors of 18690 are 2, 3, 5, 7, 89. Prime factorization of 18690 in exponential form is:

18690 = 21 × 31 × 51 × 71 × 891

Now multiplying the highest exponent prime factors to calculate the LCM of 18684 and 18690.

LCM(18684,18690) = 22 × 33 × 1731 × 51 × 71 × 891
LCM(18684,18690) = 58200660