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 394 the smallest integer that is 76436 that is divisible by both numbers.
Least Common Multiple (LCM) of 388 and 394 is 76436.
LCM(388,394) = 76436
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 394. First we will calculate the prime factors of 388 and 394.
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 394
2 | 394 |
197 | 197 |
1 |
Prime factors of 394 are 2,197. Prime factorization of 394 in exponential form is:
394 = 21×1971
Now multiplying the highest exponent prime factors to calculate the LCM of 388 and 394.
LCM(388,394) = 22×971×1971
LCM(388,394) = 76436
Factors of 388
List of positive integer factors of 388 that divides 388 without a remainder.
1, 2, 4, 97, 194, 388
Factors of 394
List of positive integer factors of 394 that divides 394 without a remainder.
1, 2, 197, 394
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 388 and 394, than apply into the LCM equation.
GCF(388,394) = 2
LCM(388,394) = ( 388 × 394) / 2
LCM(388,394) = 152872 / 2
LCM(388,394) = 76436
(i) The LCM of 394 and 388 is associative
LCM of 388 and 394 = LCM of 394 and 388
1. What is the LCM of 388 and 394?
Answer: LCM of 388 and 394 is 76436.
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 394?
Answer: Factors of 394 are 1, 2, 197, 394. There are 4 integers that are factors of 394. The greatest factor of 394 is 394.
4. How to Find the LCM of 388 and 394?
Answer:
Least Common Multiple of 388 and 394 = 76436
Step 1: Find the prime factorization of 388
388 = 2 x 2 x 97
Step 2: Find the prime factorization of 394
394 = 2 x 197
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 76436 = 2 x 2 x 97 x 197
Step 4: Therefore, the least common multiple of 388 and 394 is 76436.