What is the Least Common Multiple of 9876 and 9890?
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 9876 and 9890 is 48836820.
LCM(9876,9890) = 48836820
Least Common Multiple of 9876 and 9890 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9876 and 9890, than apply into the LCM equation.
GCF(9876,9890) = 2
LCM(9876,9890) = ( 9876 × 9890) / 2
LCM(9876,9890) = 97673640 / 2
LCM(9876,9890) = 48836820
Least Common Multiple (LCM) of 9876 and 9890 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 9876 and 9890. First we will calculate the prime factors of 9876 and 9890.
Prime Factorization of 9876
Prime factors of 9876 are 2, 3, 823. Prime factorization of 9876 in exponential form is:
9876 = 22 × 31 × 8231
Prime Factorization of 9890
Prime factors of 9890 are 2, 5, 23, 43. Prime factorization of 9890 in exponential form is:
9890 = 21 × 51 × 231 × 431
Now multiplying the highest exponent prime factors to calculate the LCM of 9876 and 9890.
LCM(9876,9890) = 22 × 31 × 8231 × 51 × 231 × 431
LCM(9876,9890) = 48836820
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