Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7864 and 7872 the smallest integer that is 7738176 that is divisible by both numbers.
Least Common Multiple (LCM) of 7864 and 7872 is 7738176.
LCM(7864,7872) = 7738176
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 7864 and 7872. First we will calculate the prime factors of 7864 and 7872.
Prime Factorization of 7864
2 | 7864 |
2 | 3932 |
2 | 1966 |
983 | 983 |
1 |
Prime factors of 7864 are 2,983. Prime factorization of 7864 in exponential form is:
7864 = 23×9831
Prime Factorization of 7872
2 | 7872 |
2 | 3936 |
2 | 1968 |
2 | 984 |
2 | 492 |
2 | 246 |
3 | 123 |
41 | 41 |
1 |
Prime factors of 7872 are 2, 3,41. Prime factorization of 7872 in exponential form is:
7872 = 26×31×411
Now multiplying the highest exponent prime factors to calculate the LCM of 7864 and 7872.
LCM(7864,7872) = 26×31×411×9831
LCM(7864,7872) = 7738176
Factors of 7864
List of positive integer factors of 7864 that divides 7864 without a remainder.
1, 2, 4, 8, 983, 1966, 3932, 7864
Factors of 7872
List of positive integer factors of 7872 that divides 7872 without a remainder.
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 41, 48, 64, 82, 96, 123, 164, 192, 246, 328, 492, 656, 984, 1312, 1968, 2624, 3936, 7872
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7864 and 7872, than apply into the LCM equation.
GCF(7864,7872) = 8
LCM(7864,7872) = ( 7864 × 7872) / 8
LCM(7864,7872) = 61905408 / 8
LCM(7864,7872) = 7738176
(i) The LCM of 7872 and 7864 is associative
LCM of 7864 and 7872 = LCM of 7872 and 7864
1. What is the LCM of 7864 and 7872?
Answer: LCM of 7864 and 7872 is 7738176.
2. What are the Factors of 7864?
Answer: Factors of 7864 are 1, 2, 4, 8, 983, 1966, 3932, 7864. There are 8 integers that are factors of 7864. The greatest factor of 7864 is 7864.
3. What are the Factors of 7872?
Answer: Factors of 7872 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 41, 48, 64, 82, 96, 123, 164, 192, 246, 328, 492, 656, 984, 1312, 1968, 2624, 3936, 7872. There are 28 integers that are factors of 7872. The greatest factor of 7872 is 7872.
4. How to Find the LCM of 7864 and 7872?
Answer:
Least Common Multiple of 7864 and 7872 = 7738176
Step 1: Find the prime factorization of 7864
7864 = 2 x 2 x 2 x 983
Step 2: Find the prime factorization of 7872
7872 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7738176 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 41 x 983
Step 4: Therefore, the least common multiple of 7864 and 7872 is 7738176.