What is the Least Common Multiple of 20668 and 20678?
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 20668 and 20678 is 213686452.
LCM(20668,20678) = 213686452
Least Common Multiple of 20668 and 20678 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20668 and 20678, than apply into the LCM equation.
GCF(20668,20678) = 2
LCM(20668,20678) = ( 20668 × 20678) / 2
LCM(20668,20678) = 427372904 / 2
LCM(20668,20678) = 213686452
Least Common Multiple (LCM) of 20668 and 20678 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 20668 and 20678. First we will calculate the prime factors of 20668 and 20678.
Prime Factorization of 20668
Prime factors of 20668 are 2, 5167. Prime factorization of 20668 in exponential form is:
20668 = 22 × 51671
Prime Factorization of 20678
Prime factors of 20678 are 2, 7, 211. Prime factorization of 20678 in exponential form is:
20678 = 21 × 72 × 2111
Now multiplying the highest exponent prime factors to calculate the LCM of 20668 and 20678.
LCM(20668,20678) = 22 × 51671 × 72 × 2111
LCM(20668,20678) = 213686452
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