Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 6386 and 6390 the smallest integer that is 20403270 that is divisible by both numbers.
Least Common Multiple (LCM) of 6386 and 6390 is 20403270.
LCM(6386,6390) = 20403270
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 6386 and 6390. First we will calculate the prime factors of 6386 and 6390.
Prime Factorization of 6386
2 | 6386 |
31 | 3193 |
103 | 103 |
1 |
Prime factors of 6386 are 2, 31,103. Prime factorization of 6386 in exponential form is:
6386 = 21×311×1031
Prime Factorization of 6390
2 | 6390 |
3 | 3195 |
3 | 1065 |
5 | 355 |
71 | 71 |
1 |
Prime factors of 6390 are 2, 3, 5,71. Prime factorization of 6390 in exponential form is:
6390 = 21×32×51×711
Now multiplying the highest exponent prime factors to calculate the LCM of 6386 and 6390.
LCM(6386,6390) = 21×32×51×311×711×1031
LCM(6386,6390) = 20403270
Factors of 6386
List of positive integer factors of 6386 that divides 6386 without a remainder.
1, 2, 31, 62, 103, 206, 3193, 6386
Factors of 6390
List of positive integer factors of 6390 that divides 6390 without a remainder.
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 6390
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6386 and 6390, than apply into the LCM equation.
GCF(6386,6390) = 2
LCM(6386,6390) = ( 6386 × 6390) / 2
LCM(6386,6390) = 40806540 / 2
LCM(6386,6390) = 20403270
(i) The LCM of 6390 and 6386 is associative
LCM of 6386 and 6390 = LCM of 6390 and 6386
1. What is the LCM of 6386 and 6390?
Answer: LCM of 6386 and 6390 is 20403270.
2. What are the Factors of 6386?
Answer: Factors of 6386 are 1, 2, 31, 62, 103, 206, 3193, 6386. There are 8 integers that are factors of 6386. The greatest factor of 6386 is 6386.
3. What are the Factors of 6390?
Answer: Factors of 6390 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 6390. There are 24 integers that are factors of 6390. The greatest factor of 6390 is 6390.
4. How to Find the LCM of 6386 and 6390?
Answer:
Least Common Multiple of 6386 and 6390 = 20403270
Step 1: Find the prime factorization of 6386
6386 = 2 x 31 x 103
Step 2: Find the prime factorization of 6390
6390 = 2 x 3 x 3 x 5 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 20403270 = 2 x 3 x 3 x 5 x 31 x 71 x 103
Step 4: Therefore, the least common multiple of 6386 and 6390 is 20403270.