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What is the Least Common Multiple of 39767 and 39780?

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 39767 and 39780 is 121687020.

LCM(39767,39780) = 121687020

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Least Common Multiple of 39767 and 39780 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39767 and 39780, than apply into the LCM equation.

GCF(39767,39780) = 13
LCM(39767,39780) = ( 39767 × 39780) / 13
LCM(39767,39780) = 1581931260 / 13
LCM(39767,39780) = 121687020

Least Common Multiple (LCM) of 39767 and 39780 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39767 and 39780. First we will calculate the prime factors of 39767 and 39780.

Prime Factorization of 39767

Prime factors of 39767 are 7, 13, 19, 23. Prime factorization of 39767 in exponential form is:

39767 = 71 × 131 × 191 × 231

Prime Factorization of 39780

Prime factors of 39780 are 2, 3, 5, 13, 17. Prime factorization of 39780 in exponential form is:

39780 = 22 × 32 × 51 × 131 × 171

Now multiplying the highest exponent prime factors to calculate the LCM of 39767 and 39780.

LCM(39767,39780) = 71 × 131 × 191 × 231 × 22 × 32 × 51 × 171
LCM(39767,39780) = 121687020