Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 387 and 394 the smallest integer that is 152478 that is divisible by both numbers.
Least Common Multiple (LCM) of 387 and 394 is 152478.
LCM(387,394) = 152478
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 387 and 394. First we will calculate the prime factors of 387 and 394.
Prime Factorization of 387
3 | 387 |
3 | 129 |
43 | 43 |
1 |
Prime factors of 387 are 3,43. Prime factorization of 387 in exponential form is:
387 = 32×431
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 387 and 394.
LCM(387,394) = 21×32×431×1971
LCM(387,394) = 152478
Factors of 387
List of positive integer factors of 387 that divides 387 without a remainder.
1, 3, 9, 43, 129, 387
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 387 and 394, than apply into the LCM equation.
GCF(387,394) = 1
LCM(387,394) = ( 387 × 394) / 1
LCM(387,394) = 152478 / 1
LCM(387,394) = 152478
(i) The LCM of 394 and 387 is associative
LCM of 387 and 394 = LCM of 394 and 387
1. What is the LCM of 387 and 394?
Answer: LCM of 387 and 394 is 152478.
2. What are the Factors of 387?
Answer: Factors of 387 are 1, 3, 9, 43, 129, 387. There are 6 integers that are factors of 387. The greatest factor of 387 is 387.
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 387 and 394?
Answer:
Least Common Multiple of 387 and 394 = 152478
Step 1: Find the prime factorization of 387
387 = 3 x 3 x 43
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 = 152478 = 2 x 3 x 3 x 43 x 197
Step 4: Therefore, the least common multiple of 387 and 394 is 152478.