LCM of 126, 640, 762, 780
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 126, 640, 762, 780 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 126, 640, 762, 780. So, keep reading to learn more.
Given numbers are 126,640,762,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 126,640,762,780 is 66568320.
Find LCM of 126,640,762,780 with Prime Factorization
| 2 | 126, 640, 762, 780 |
| 2 | 63, 320, 381, 390 |
| 3 | 63, 160, 381, 195 |
| 5 | 21, 160, 127, 65 |
| 21, 32, 127, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 21 x 32 x 127 x 13 = 66568320
Therefore, the lowest common multiple of 126,640,762,780 is 66568320.
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.
126 x 640 x 762 x 780 = 47929190400
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.
126 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
762 : 1, 2, 3, 6, 127, 254, 381, 762
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 126,640,762,780, is 2.
Now, the common factors can be found like this.
126:2x 3x 3x 7
640:2x 2x 2x 2x 2x 2x 2x 5
762:2x 3x 127
780:2x 2x 3x 5x 13
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 3x 3x 5 = 360
Therefore, the value for common factors is 360.
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 = 47929190400/(2x360)
LCM = 47929190400/720
LCM = 66568320
Thus, we can understand that the LCM of 126,640,762,780 is 66568320.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 126, 640, 762, 780
1. What is the LCM of 126, 640, 762, 780?
Answer: LCM of 126, 640, 762, 780 is 66568320.
2. How to calculate the LCM of 126, 640, 762, 780?
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 126, 640, 762, 780.
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}.