What is the Least Common Multiple of 28960 and 28980?
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 28960 and 28980 is 41963040.
LCM(28960,28980) = 41963040
Least Common Multiple of 28960 and 28980 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28960 and 28980, than apply into the LCM equation.
GCF(28960,28980) = 20
LCM(28960,28980) = ( 28960 × 28980) / 20
LCM(28960,28980) = 839260800 / 20
LCM(28960,28980) = 41963040
Least Common Multiple (LCM) of 28960 and 28980 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 28960 and 28980. First we will calculate the prime factors of 28960 and 28980.
Prime Factorization of 28960
Prime factors of 28960 are 2, 5, 181. Prime factorization of 28960 in exponential form is:
28960 = 25 × 51 × 1811
Prime Factorization of 28980
Prime factors of 28980 are 2, 3, 5, 7, 23. Prime factorization of 28980 in exponential form is:
28980 = 22 × 32 × 51 × 71 × 231
Now multiplying the highest exponent prime factors to calculate the LCM of 28960 and 28980.
LCM(28960,28980) = 25 × 51 × 1811 × 32 × 71 × 231
LCM(28960,28980) = 41963040
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