Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 676 and 684 the smallest integer that is 115596 that is divisible by both numbers.
Least Common Multiple (LCM) of 676 and 684 is 115596.
LCM(676,684) = 115596
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 676 and 684. First we will calculate the prime factors of 676 and 684.
Prime Factorization of 676
2 | 676 |
2 | 338 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 676 are 2,13. Prime factorization of 676 in exponential form is:
676 = 22×132
Prime Factorization of 684
2 | 684 |
2 | 342 |
3 | 171 |
3 | 57 |
19 | 19 |
1 |
Prime factors of 684 are 2, 3,19. Prime factorization of 684 in exponential form is:
684 = 22×32×191
Now multiplying the highest exponent prime factors to calculate the LCM of 676 and 684.
LCM(676,684) = 22×32×132×191
LCM(676,684) = 115596
Factors of 676
List of positive integer factors of 676 that divides 676 without a remainder.
1, 2, 4, 13, 26, 52, 169, 338, 676
Factors of 684
List of positive integer factors of 684 that divides 684 without a remainder.
1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 676 and 684, than apply into the LCM equation.
GCF(676,684) = 4
LCM(676,684) = ( 676 × 684) / 4
LCM(676,684) = 462384 / 4
LCM(676,684) = 115596
(i) The LCM of 684 and 676 is associative
LCM of 676 and 684 = LCM of 684 and 676
1. What is the LCM of 676 and 684?
Answer: LCM of 676 and 684 is 115596.
2. What are the Factors of 676?
Answer: Factors of 676 are 1, 2, 4, 13, 26, 52, 169, 338, 676. There are 9 integers that are factors of 676. The greatest factor of 676 is 676.
3. What are the Factors of 684?
Answer: Factors of 684 are 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684. There are 18 integers that are factors of 684. The greatest factor of 684 is 684.
4. How to Find the LCM of 676 and 684?
Answer:
Least Common Multiple of 676 and 684 = 115596
Step 1: Find the prime factorization of 676
676 = 2 x 2 x 13 x 13
Step 2: Find the prime factorization of 684
684 = 2 x 2 x 3 x 3 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 115596 = 2 x 2 x 3 x 3 x 13 x 13 x 19
Step 4: Therefore, the least common multiple of 676 and 684 is 115596.