Find the LCM of 920, 704, 715, 686 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 920, 704, 715, 686. So, keep reading to learn more.
Given numbers are 920,704,715,686
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 920,704,715,686 is 361000640.
Find LCM of 920,704,715,686 with Prime Factorization
2 | 920, 704, 715, 686 |
2 | 460, 352, 715, 343 |
2 | 230, 176, 715, 343 |
5 | 115, 88, 715, 343 |
11 | 23, 88, 143, 343 |
23, 8, 13, 343 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 11 x 23 x 8 x 13 x 343 = 361000640
Therefore, the lowest common multiple of 920,704,715,686 is 361000640.
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.
920 x 704 x 715 x 686 = 317680563200
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.
920 : 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
704 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
715 : 1, 5, 11, 13, 55, 65, 143, 715
686 : 1, 2, 7, 14, 49, 98, 343, 686
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 920,704,715,686, is 1.
Now, the common factors can be found like this.
920:2x 2x 2x 5x 23
704:2x 2x 2x 2x 2x 2x 11
715:5x 11x 13
686:2x 7x 7x 7
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 5x 11 = 880
Therefore, the value for common factors is 880.
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 = 317680563200/(1x880)
LCM = 317680563200/880
LCM = 361000640
Thus, we can understand that the LCM of 920,704,715,686 is 361000640.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 920, 704, 715, 686?
Answer: LCM of 920, 704, 715, 686 is 361000640.
2. How to calculate the LCM of 920, 704, 715, 686?
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 920, 704, 715, 686.
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}.