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What is the Least Common Multiple of 18690 and 18706?

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 18690 and 18706 is 174807570.

LCM(18690,18706) = 174807570

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Least Common Multiple of 18690 and 18706 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18690 and 18706, than apply into the LCM equation.

GCF(18690,18706) = 2
LCM(18690,18706) = ( 18690 × 18706) / 2
LCM(18690,18706) = 349615140 / 2
LCM(18690,18706) = 174807570

Least Common Multiple (LCM) of 18690 and 18706 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18690 and 18706. First we will calculate the prime factors of 18690 and 18706.

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

Prime Factorization of 18706

Prime factors of 18706 are 2, 47, 199. Prime factorization of 18706 in exponential form is:

18706 = 21 × 471 × 1991

Now multiplying the highest exponent prime factors to calculate the LCM of 18690 and 18706.

LCM(18690,18706) = 21 × 31 × 51 × 71 × 891 × 471 × 1991
LCM(18690,18706) = 174807570