Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 338 and 340 the smallest integer that is 57460 that is divisible by both numbers.
Least Common Multiple (LCM) of 338 and 340 is 57460.
LCM(338,340) = 57460
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 338 and 340. First we will calculate the prime factors of 338 and 340.
Prime Factorization of 338
2 | 338 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 338 are 2,13. Prime factorization of 338 in exponential form is:
338 = 21×132
Prime Factorization of 340
2 | 340 |
2 | 170 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 340 are 2, 5,17. Prime factorization of 340 in exponential form is:
340 = 22×51×171
Now multiplying the highest exponent prime factors to calculate the LCM of 338 and 340.
LCM(338,340) = 22×51×132×171
LCM(338,340) = 57460
Factors of 338
List of positive integer factors of 338 that divides 338 without a remainder.
1, 2, 13, 26, 169, 338
Factors of 340
List of positive integer factors of 340 that divides 340 without a remainder.
1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 338 and 340, than apply into the LCM equation.
GCF(338,340) = 2
LCM(338,340) = ( 338 × 340) / 2
LCM(338,340) = 114920 / 2
LCM(338,340) = 57460
(i) The LCM of 340 and 338 is associative
LCM of 338 and 340 = LCM of 340 and 338
1. What is the LCM of 338 and 340?
Answer: LCM of 338 and 340 is 57460.
2. What are the Factors of 338?
Answer: Factors of 338 are 1, 2, 13, 26, 169, 338. There are 6 integers that are factors of 338. The greatest factor of 338 is 338.
3. What are the Factors of 340?
Answer: Factors of 340 are 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340. There are 12 integers that are factors of 340. The greatest factor of 340 is 340.
4. How to Find the LCM of 338 and 340?
Answer:
Least Common Multiple of 338 and 340 = 57460
Step 1: Find the prime factorization of 338
338 = 2 x 13 x 13
Step 2: Find the prime factorization of 340
340 = 2 x 2 x 5 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 57460 = 2 x 2 x 5 x 13 x 13 x 17
Step 4: Therefore, the least common multiple of 338 and 340 is 57460.