Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 916 and 921 the smallest integer that is 843636 that is divisible by both numbers.
Least Common Multiple (LCM) of 916 and 921 is 843636.
LCM(916,921) = 843636
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 916 and 921. First we will calculate the prime factors of 916 and 921.
Prime Factorization of 916
2 | 916 |
2 | 458 |
229 | 229 |
1 |
Prime factors of 916 are 2,229. Prime factorization of 916 in exponential form is:
916 = 22×2291
Prime Factorization of 921
3 | 921 |
307 | 307 |
1 |
Prime factors of 921 are 3,307. Prime factorization of 921 in exponential form is:
921 = 31×3071
Now multiplying the highest exponent prime factors to calculate the LCM of 916 and 921.
LCM(916,921) = 22×31×2291×3071
LCM(916,921) = 843636
Factors of 916
List of positive integer factors of 916 that divides 916 without a remainder.
1, 2, 4, 229, 458, 916
Factors of 921
List of positive integer factors of 921 that divides 921 without a remainder.
1, 3, 307, 921
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 916 and 921, than apply into the LCM equation.
GCF(916,921) = 1
LCM(916,921) = ( 916 × 921) / 1
LCM(916,921) = 843636 / 1
LCM(916,921) = 843636
(i) The LCM of 921 and 916 is associative
LCM of 916 and 921 = LCM of 921 and 916
1. What is the LCM of 916 and 921?
Answer: LCM of 916 and 921 is 843636.
2. What are the Factors of 916?
Answer: Factors of 916 are 1, 2, 4, 229, 458, 916. There are 6 integers that are factors of 916. The greatest factor of 916 is 916.
3. What are the Factors of 921?
Answer: Factors of 921 are 1, 3, 307, 921. There are 4 integers that are factors of 921. The greatest factor of 921 is 921.
4. How to Find the LCM of 916 and 921?
Answer:
Least Common Multiple of 916 and 921 = 843636
Step 1: Find the prime factorization of 916
916 = 2 x 2 x 229
Step 2: Find the prime factorization of 921
921 = 3 x 307
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 843636 = 2 x 2 x 3 x 229 x 307
Step 4: Therefore, the least common multiple of 916 and 921 is 843636.