Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 382 and 390 the smallest integer that is 74490 that is divisible by both numbers.
Least Common Multiple (LCM) of 382 and 390 is 74490.
LCM(382,390) = 74490
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 382 and 390. First we will calculate the prime factors of 382 and 390.
Prime Factorization of 382
2 | 382 |
191 | 191 |
1 |
Prime factors of 382 are 2,191. Prime factorization of 382 in exponential form is:
382 = 21×1911
Prime Factorization of 390
2 | 390 |
3 | 195 |
5 | 65 |
13 | 13 |
1 |
Prime factors of 390 are 2, 3, 5,13. Prime factorization of 390 in exponential form is:
390 = 21×31×51×131
Now multiplying the highest exponent prime factors to calculate the LCM of 382 and 390.
LCM(382,390) = 21×31×51×131×1911
LCM(382,390) = 74490
Factors of 382
List of positive integer factors of 382 that divides 382 without a remainder.
1, 2, 191, 382
Factors of 390
List of positive integer factors of 390 that divides 390 without a remainder.
1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 382 and 390, than apply into the LCM equation.
GCF(382,390) = 2
LCM(382,390) = ( 382 × 390) / 2
LCM(382,390) = 148980 / 2
LCM(382,390) = 74490
(i) The LCM of 390 and 382 is associative
LCM of 382 and 390 = LCM of 390 and 382
1. What is the LCM of 382 and 390?
Answer: LCM of 382 and 390 is 74490.
2. What are the Factors of 382?
Answer: Factors of 382 are 1, 2, 191, 382. There are 4 integers that are factors of 382. The greatest factor of 382 is 382.
3. What are the Factors of 390?
Answer: Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. There are 16 integers that are factors of 390. The greatest factor of 390 is 390.
4. How to Find the LCM of 382 and 390?
Answer:
Least Common Multiple of 382 and 390 = 74490
Step 1: Find the prime factorization of 382
382 = 2 x 191
Step 2: Find the prime factorization of 390
390 = 2 x 3 x 5 x 13
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 74490 = 2 x 3 x 5 x 13 x 191
Step 4: Therefore, the least common multiple of 382 and 390 is 74490.