Find the LCM of 728, 642, 437, 621, 640 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 728, 642, 437, 621, 640. So, keep reading to learn more.
Given numbers are 728,642,437,621,640
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 728,642,437,621,640 is 73527592320.
Find LCM of 728,642,437,621,640 with Prime Factorization
2 | 728, 642, 437, 621, 640 |
2 | 364, 321, 437, 621, 320 |
2 | 182, 321, 437, 621, 160 |
3 | 91, 321, 437, 621, 80 |
23 | 91, 107, 437, 207, 80 |
91, 107, 19, 9, 80 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 23 x 91 x 107 x 19 x 9 x 80 = 73527592320
Therefore, the lowest common multiple of 728,642,437,621,640 is 73527592320.
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.
728 x 642 x 437 x 621 x 640 = 81174461921280
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.
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
642 : 1, 2, 3, 6, 107, 214, 321, 642
437 : 1, 19, 23, 437
621 : 1, 3, 9, 23, 27, 69, 207, 621
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,642,437,621,640, is 1.
Now, the common factors can be found like this.
728:2x 2x 2x 7x 13
642:2x 3x 107
437:19x 23
621:3x 3x 3x 23
640:2x 2x 2x 2x 2x 2x 2x 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 2x 2x 3x 23 = 1104
Therefore, the value for common factors is 1104.
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 = 81174461921280/(1x1104)
LCM = 81174461921280/1104
LCM = 73527592320
Thus, we can understand that the LCM of 728,642,437,621,640 is 73527592320.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 728, 642, 437, 621, 640?
Answer: LCM of 728, 642, 437, 621, 640 is 73527592320.
2. How to calculate the LCM of 728, 642, 437, 621, 640?
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 728, 642, 437, 621, 640.
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}.