LCM of 769, 676, 720, 780
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 769, 676, 720, 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 769, 676, 720, 780. So, keep reading to learn more.
Given numbers are 769,676,720,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 769,676,720,780 is 93571920.
Find LCM of 769,676,720,780 with Prime Factorization
| 2 | 769, 676, 720, 780 |
| 2 | 769, 338, 360, 390 |
| 3 | 769, 169, 180, 195 |
| 5 | 769, 169, 60, 65 |
| 13 | 769, 169, 12, 13 |
| 769, 1, 12, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 13 x 769 x 1 x 12 x 13 = 93571920
Therefore, the lowest common multiple of 769,676,720,780 is 93571920.
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.
769 x 676 x 720 x 780 = 291944390400
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.
769 : 1, 769
676 : 1, 2, 4, 13, 26, 52, 169, 338, 676
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
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 769,676,720,780, is 1.
Now, the common factors can be found like this.
769:769
676:2x 2x 13x 13
720:2x 2x 2x 2x 3x 3x 5
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 3x 5x 13 = 3120
Therefore, the value for common factors is 3120.
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 = 291944390400/(1x3120)
LCM = 291944390400/3120
LCM = 93571920
Thus, we can understand that the LCM of 769,676,720,780 is 93571920.
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FAQs on LCM of 769, 676, 720, 780
1. What is the LCM of 769, 676, 720, 780?
Answer: LCM of 769, 676, 720, 780 is 93571920.
2. How to calculate the LCM of 769, 676, 720, 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 769, 676, 720, 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}.