Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3916 and 3921 the smallest integer that is 15354636 that is divisible by both numbers.
Least Common Multiple (LCM) of 3916 and 3921 is 15354636.
LCM(3916,3921) = 15354636
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 3916 and 3921. First we will calculate the prime factors of 3916 and 3921.
Prime Factorization of 3916
2 | 3916 |
2 | 1958 |
11 | 979 |
89 | 89 |
1 |
Prime factors of 3916 are 2, 11,89. Prime factorization of 3916 in exponential form is:
3916 = 22×111×891
Prime Factorization of 3921
3 | 3921 |
1307 | 1307 |
1 |
Prime factors of 3921 are 3,1307. Prime factorization of 3921 in exponential form is:
3921 = 31×13071
Now multiplying the highest exponent prime factors to calculate the LCM of 3916 and 3921.
LCM(3916,3921) = 22×31×111×891×13071
LCM(3916,3921) = 15354636
Factors of 3916
List of positive integer factors of 3916 that divides 3916 without a remainder.
1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916
Factors of 3921
List of positive integer factors of 3921 that divides 3921 without a remainder.
1, 3, 1307, 3921
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3916 and 3921, than apply into the LCM equation.
GCF(3916,3921) = 1
LCM(3916,3921) = ( 3916 × 3921) / 1
LCM(3916,3921) = 15354636 / 1
LCM(3916,3921) = 15354636
(i) The LCM of 3921 and 3916 is associative
LCM of 3916 and 3921 = LCM of 3921 and 3916
1. What is the LCM of 3916 and 3921?
Answer: LCM of 3916 and 3921 is 15354636.
2. What are the Factors of 3916?
Answer: Factors of 3916 are 1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916. There are 12 integers that are factors of 3916. The greatest factor of 3916 is 3916.
3. What are the Factors of 3921?
Answer: Factors of 3921 are 1, 3, 1307, 3921. There are 4 integers that are factors of 3921. The greatest factor of 3921 is 3921.
4. How to Find the LCM of 3916 and 3921?
Answer:
Least Common Multiple of 3916 and 3921 = 15354636
Step 1: Find the prime factorization of 3916
3916 = 2 x 2 x 11 x 89
Step 2: Find the prime factorization of 3921
3921 = 3 x 1307
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15354636 = 2 x 2 x 3 x 11 x 89 x 1307
Step 4: Therefore, the least common multiple of 3916 and 3921 is 15354636.