LCM of 756, 820, 715, 638, 558
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 756, 820, 715, 638, 558 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 756, 820, 715, 638, 558. So, keep reading to learn more.
Given numbers are 756,820,715,638,558
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 756,820,715,638,558 is 19923763860.
Find LCM of 756,820,715,638,558 with Prime Factorization
| 2 | 756, 820, 715, 638, 558 |
| 2 | 378, 410, 715, 319, 279 |
| 3 | 189, 205, 715, 319, 279 |
| 3 | 63, 205, 715, 319, 93 |
| 5 | 21, 205, 715, 319, 31 |
| 11 | 21, 41, 143, 319, 31 |
| 21, 41, 13, 29, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 11 x 21 x 41 x 13 x 29 x 31 = 19923763860
Therefore, the lowest common multiple of 756,820,715,638,558 is 19923763860.
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.
756 x 820 x 715 x 638 x 558 = 157796209771200
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.
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
715 : 1, 5, 11, 13, 55, 65, 143, 715
638 : 1, 2, 11, 22, 29, 58, 319, 638
558 : 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 756,820,715,638,558, is 1.
Now, the common factors can be found like this.
756:2x 2x 3x 3x 3x 7
820:2x 2x 5x 41
715:5x 11x 13
638:2x 11x 29
558:2x 3x 3x 31
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 3x 5x 11 = 7920
Therefore, the value for common factors is 7920.
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 = 157796209771200/(1x7920)
LCM = 157796209771200/7920
LCM = 19923763860
Thus, we can understand that the LCM of 756,820,715,638,558 is 19923763860.
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FAQs on LCM of 756, 820, 715, 638, 558
1. What is the LCM of 756, 820, 715, 638, 558?
Answer: LCM of 756, 820, 715, 638, 558 is 19923763860.
2. How to calculate the LCM of 756, 820, 715, 638, 558?
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 756, 820, 715, 638, 558.
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}.