What is the Least Common Multiple of 720 and 726?
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 720 and 726 is 87120.
LCM(720,726) = 87120
Least Common Multiple of 720 and 726 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 720 and 726, than apply into the LCM equation.
GCF(720,726) = 6
LCM(720,726) = ( 720 × 726) / 6
LCM(720,726) = 522720 / 6
LCM(720,726) = 87120
Least Common Multiple (LCM) of 720 and 726 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 720 and 726. First we will calculate the prime factors of 720 and 726.
Prime Factorization of 720
Prime factors of 720 are 2, 3, 5. Prime factorization of 720 in exponential form is:
720 = 24 × 32 × 51
Prime Factorization of 726
Prime factors of 726 are 2, 3, 11. Prime factorization of 726 in exponential form is:
726 = 21 × 31 × 112
Now multiplying the highest exponent prime factors to calculate the LCM of 720 and 726.
LCM(720,726) = 24 × 32 × 51 × 112
LCM(720,726) = 87120
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