LCM of 816, 646, 720, 628
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 816, 646, 720, 628 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 816, 646, 720, 628. So, keep reading to learn more.
Given numbers are 816,646,720,628
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 816,646,720,628 is 36511920.
Find LCM of 816,646,720,628 with Prime Factorization
| 2 | 816, 646, 720, 628 |
| 2 | 408, 323, 360, 314 |
| 2 | 204, 323, 180, 157 |
| 2 | 102, 323, 90, 157 |
| 3 | 51, 323, 45, 157 |
| 17 | 17, 323, 15, 157 |
| 1, 19, 15, 157 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 17 x 1 x 19 x 15 x 157 = 36511920
Therefore, the lowest common multiple of 816,646,720,628 is 36511920.
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.
816 x 646 x 720 x 628 = 238349813760
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.
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
646 : 1, 2, 17, 19, 34, 38, 323, 646
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
628 : 1, 2, 4, 157, 314, 628
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 816,646,720,628, is 2.
Now, the common factors can be found like this.
816:2x 2x 2x 2x 3x 17
646:2x 17x 19
720:2x 2x 2x 2x 3x 3x 5
628:2x 2x 157
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 2x 2x 2x 2x 3x 17 = 3264
Therefore, the value for common factors is 3264.
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 = 238349813760/(2x3264)
LCM = 238349813760/6528
LCM = 36511920
Thus, we can understand that the LCM of 816,646,720,628 is 36511920.
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FAQs on LCM of 816, 646, 720, 628
1. What is the LCM of 816, 646, 720, 628?
Answer: LCM of 816, 646, 720, 628 is 36511920.
2. How to calculate the LCM of 816, 646, 720, 628?
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 816, 646, 720, 628.
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}.