Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 388 and 396 the smallest integer that is 38412 that is divisible by both numbers.
Least Common Multiple (LCM) of 388 and 396 is 38412.
LCM(388,396) = 38412
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 388 and 396. First we will calculate the prime factors of 388 and 396.
Prime Factorization of 388
2 | 388 |
2 | 194 |
97 | 97 |
1 |
Prime factors of 388 are 2,97. Prime factorization of 388 in exponential form is:
388 = 22×971
Prime Factorization of 396
2 | 396 |
2 | 198 |
3 | 99 |
3 | 33 |
11 | 11 |
1 |
Prime factors of 396 are 2, 3,11. Prime factorization of 396 in exponential form is:
396 = 22×32×111
Now multiplying the highest exponent prime factors to calculate the LCM of 388 and 396.
LCM(388,396) = 22×32×111×971
LCM(388,396) = 38412
Factors of 388
List of positive integer factors of 388 that divides 388 without a remainder.
1, 2, 4, 97, 194, 388
Factors of 396
List of positive integer factors of 396 that divides 396 without a remainder.
1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 388 and 396, than apply into the LCM equation.
GCF(388,396) = 4
LCM(388,396) = ( 388 × 396) / 4
LCM(388,396) = 153648 / 4
LCM(388,396) = 38412
(i) The LCM of 396 and 388 is associative
LCM of 388 and 396 = LCM of 396 and 388
1. What is the LCM of 388 and 396?
Answer: LCM of 388 and 396 is 38412.
2. What are the Factors of 388?
Answer: Factors of 388 are 1, 2, 4, 97, 194, 388. There are 6 integers that are factors of 388. The greatest factor of 388 is 388.
3. What are the Factors of 396?
Answer: Factors of 396 are 1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396. There are 18 integers that are factors of 396. The greatest factor of 396 is 396.
4. How to Find the LCM of 388 and 396?
Answer:
Least Common Multiple of 388 and 396 = 38412
Step 1: Find the prime factorization of 388
388 = 2 x 2 x 97
Step 2: Find the prime factorization of 396
396 = 2 x 2 x 3 x 3 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 38412 = 2 x 2 x 3 x 3 x 11 x 97
Step 4: Therefore, the least common multiple of 388 and 396 is 38412.