LCM of 682, 155, 638, 720
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 682, 155, 638, 720 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 682, 155, 638, 720. So, keep reading to learn more.
Given numbers are 682,155,638,720
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 682,155,638,720 is 7120080.
Find LCM of 682,155,638,720 with Prime Factorization
| 2 | 682, 155, 638, 720 |
| 5 | 341, 155, 319, 360 |
| 11 | 341, 31, 319, 72 |
| 31 | 31, 31, 29, 72 |
| 1, 1, 29, 72 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 11 x 31 x 1 x 1 x 29 x 72 = 7120080
Therefore, the lowest common multiple of 682,155,638,720 is 7120080.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
682 x 155 x 638 x 720 = 48558945600
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
682 : 1, 2, 11, 22, 31, 62, 341, 682
155 : 1, 5, 31, 155
638 : 1, 2, 11, 22, 29, 58, 319, 638
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 682,155,638,720, is 1.
Now, the common factors can be found like this.
682:2x 11x 31
155:5x 31
638:2x 11x 29
720:2x 2x 2x 2x 3x 3x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 5x 11x 31 = 6820
Therefore, the value for common factors is 6820.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 48558945600/(1x6820)
LCM = 48558945600/6820
LCM = 7120080
Thus, we can understand that the LCM of 682,155,638,720 is 7120080.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 682, 155, 638, 720
1. What is the LCM of 682, 155, 638, 720?
Answer: LCM of 682, 155, 638, 720 is 7120080.
2. How to calculate the LCM of 682, 155, 638, 720?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 682, 155, 638, 720.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.