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What is the Least Common Multiple of 57260 and 57280?

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 57260 and 57280 is 163992640.

LCM(57260,57280) = 163992640

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Least Common Multiple of 57260 and 57280 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 57260 and 57280, than apply into the LCM equation.

GCF(57260,57280) = 20
LCM(57260,57280) = ( 57260 × 57280) / 20
LCM(57260,57280) = 3279852800 / 20
LCM(57260,57280) = 163992640

Least Common Multiple (LCM) of 57260 and 57280 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 57260 and 57280. First we will calculate the prime factors of 57260 and 57280.

Prime Factorization of 57260

Prime factors of 57260 are 2, 5, 7, 409. Prime factorization of 57260 in exponential form is:

57260 = 22 × 51 × 71 × 4091

Prime Factorization of 57280

Prime factors of 57280 are 2, 5, 179. Prime factorization of 57280 in exponential form is:

57280 = 26 × 51 × 1791

Now multiplying the highest exponent prime factors to calculate the LCM of 57260 and 57280.

LCM(57260,57280) = 26 × 51 × 71 × 4091 × 1791
LCM(57260,57280) = 163992640