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What is the Least Common Multiple of 20750 and 20757?

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 20750 and 20757 is 430707750.

LCM(20750,20757) = 430707750

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Least Common Multiple of 20750 and 20757 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20750 and 20757, than apply into the LCM equation.

GCF(20750,20757) = 1
LCM(20750,20757) = ( 20750 × 20757) / 1
LCM(20750,20757) = 430707750 / 1
LCM(20750,20757) = 430707750

Least Common Multiple (LCM) of 20750 and 20757 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20750 and 20757. First we will calculate the prime factors of 20750 and 20757.

Prime Factorization of 20750

Prime factors of 20750 are 2, 5, 83. Prime factorization of 20750 in exponential form is:

20750 = 21 × 53 × 831

Prime Factorization of 20757

Prime factors of 20757 are 3, 11, 17, 37. Prime factorization of 20757 in exponential form is:

20757 = 31 × 111 × 171 × 371

Now multiplying the highest exponent prime factors to calculate the LCM of 20750 and 20757.

LCM(20750,20757) = 21 × 53 × 831 × 31 × 111 × 171 × 371
LCM(20750,20757) = 430707750