Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 680 and 682 the smallest integer that is 231880 that is divisible by both numbers.
Least Common Multiple (LCM) of 680 and 682 is 231880.
LCM(680,682) = 231880
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 680 and 682. First we will calculate the prime factors of 680 and 682.
Prime Factorization of 680
2 | 680 |
2 | 340 |
2 | 170 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 680 are 2, 5,17. Prime factorization of 680 in exponential form is:
680 = 23×51×171
Prime Factorization of 682
2 | 682 |
11 | 341 |
31 | 31 |
1 |
Prime factors of 682 are 2, 11,31. Prime factorization of 682 in exponential form is:
682 = 21×111×311
Now multiplying the highest exponent prime factors to calculate the LCM of 680 and 682.
LCM(680,682) = 23×51×111×171×311
LCM(680,682) = 231880
Factors of 680
List of positive integer factors of 680 that divides 680 without a remainder.
1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
Factors of 682
List of positive integer factors of 682 that divides 682 without a remainder.
1, 2, 11, 22, 31, 62, 341, 682
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 680 and 682, than apply into the LCM equation.
GCF(680,682) = 2
LCM(680,682) = ( 680 × 682) / 2
LCM(680,682) = 463760 / 2
LCM(680,682) = 231880
(i) The LCM of 682 and 680 is associative
LCM of 680 and 682 = LCM of 682 and 680
1. What is the LCM of 680 and 682?
Answer: LCM of 680 and 682 is 231880.
2. What are the Factors of 680?
Answer: Factors of 680 are 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680. There are 16 integers that are factors of 680. The greatest factor of 680 is 680.
3. What are the Factors of 682?
Answer: Factors of 682 are 1, 2, 11, 22, 31, 62, 341, 682. There are 8 integers that are factors of 682. The greatest factor of 682 is 682.
4. How to Find the LCM of 680 and 682?
Answer:
Least Common Multiple of 680 and 682 = 231880
Step 1: Find the prime factorization of 680
680 = 2 x 2 x 2 x 5 x 17
Step 2: Find the prime factorization of 682
682 = 2 x 11 x 31
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 231880 = 2 x 2 x 2 x 5 x 11 x 17 x 31
Step 4: Therefore, the least common multiple of 680 and 682 is 231880.