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What is the Least Common Multiple of 18474 and 18490?

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 18474 and 18490 is 170792130.

LCM(18474,18490) = 170792130

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Least Common Multiple of 18474 and 18490 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18474 and 18490, than apply into the LCM equation.

GCF(18474,18490) = 2
LCM(18474,18490) = ( 18474 × 18490) / 2
LCM(18474,18490) = 341584260 / 2
LCM(18474,18490) = 170792130

Least Common Multiple (LCM) of 18474 and 18490 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18474 and 18490. First we will calculate the prime factors of 18474 and 18490.

Prime Factorization of 18474

Prime factors of 18474 are 2, 3, 3079. Prime factorization of 18474 in exponential form is:

18474 = 21 × 31 × 30791

Prime Factorization of 18490

Prime factors of 18490 are 2, 5, 43. Prime factorization of 18490 in exponential form is:

18490 = 21 × 51 × 432

Now multiplying the highest exponent prime factors to calculate the LCM of 18474 and 18490.

LCM(18474,18490) = 21 × 31 × 30791 × 51 × 432
LCM(18474,18490) = 170792130