LCM of 821, 484, 676, 780
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 484, 676, 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 821, 484, 676, 780. So, keep reading to learn more.
Given numbers are 821,484,676,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,484,676,780 is 1007317740.
Find LCM of 821,484,676,780 with Prime Factorization
| 2 | 821, 484, 676, 780 |
| 2 | 821, 242, 338, 390 |
| 13 | 821, 121, 169, 195 |
| 821, 121, 13, 15 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 13 x 821 x 121 x 13 x 15 = 1007317740
Therefore, the lowest common multiple of 821,484,676,780 is 1007317740.
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.
821 x 484 x 676 x 780 = 209522089920
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.
821 : 1, 821
484 : 1, 2, 4, 11, 22, 44, 121, 242, 484
676 : 1, 2, 4, 13, 26, 52, 169, 338, 676
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
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,484,676,780, is 1.
Now, the common factors can be found like this.
821:821
484:2x 2x 11x 11
676:2x 2x 13x 13
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 2x 13 = 208
Therefore, the value for common factors is 208.
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 = 209522089920/(1x208)
LCM = 209522089920/208
LCM = 1007317740
Thus, we can understand that the LCM of 821,484,676,780 is 1007317740.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 821, 484, 676, 780
1. What is the LCM of 821, 484, 676, 780?
Answer: LCM of 821, 484, 676, 780 is 1007317740.
2. How to calculate the LCM of 821, 484, 676, 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 821, 484, 676, 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}.