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What is the Least Common Multiple of 19747 and 19758?

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 19747 and 19758 is 390161226.

LCM(19747,19758) = 390161226

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Least Common Multiple of 19747 and 19758 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19747 and 19758, than apply into the LCM equation.

GCF(19747,19758) = 1
LCM(19747,19758) = ( 19747 × 19758) / 1
LCM(19747,19758) = 390161226 / 1
LCM(19747,19758) = 390161226

Least Common Multiple (LCM) of 19747 and 19758 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19747 and 19758. First we will calculate the prime factors of 19747 and 19758.

Prime Factorization of 19747

Prime factors of 19747 are 7, 13, 31. Prime factorization of 19747 in exponential form is:

19747 = 72 × 131 × 311

Prime Factorization of 19758

Prime factors of 19758 are 2, 3, 37, 89. Prime factorization of 19758 in exponential form is:

19758 = 21 × 31 × 371 × 891

Now multiplying the highest exponent prime factors to calculate the LCM of 19747 and 19758.

LCM(19747,19758) = 72 × 131 × 311 × 21 × 31 × 371 × 891
LCM(19747,19758) = 390161226