LCM of 920, 392, 728, 919
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 920, 392, 728, 919 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 920, 392, 728, 919. So, keep reading to learn more.
Given numbers are 920,392,728,919
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 920,392,728,919 is 538570760.
Find LCM of 920,392,728,919 with Prime Factorization
| 2 | 920, 392, 728, 919 |
| 2 | 460, 196, 364, 919 |
| 2 | 230, 98, 182, 919 |
| 7 | 115, 49, 91, 919 |
| 115, 7, 13, 919 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 7 x 115 x 7 x 13 x 919 = 538570760
Therefore, the lowest common multiple of 920,392,728,919 is 538570760.
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.
920 x 392 x 728 x 919 = 241279700480
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.
920 : 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
392 : 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
919 : 1, 919
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 920,392,728,919, is 1.
Now, the common factors can be found like this.
920:2x 2x 2x 5x 23
392:2x 2x 2x 7x 7
728:2x 2x 2x 7x 13
919:919
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 2x 2x 7 = 448
Therefore, the value for common factors is 448.
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 = 241279700480/(1x448)
LCM = 241279700480/448
LCM = 538570760
Thus, we can understand that the LCM of 920,392,728,919 is 538570760.
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FAQs on LCM of 920, 392, 728, 919
1. What is the LCM of 920, 392, 728, 919?
Answer: LCM of 920, 392, 728, 919 is 538570760.
2. How to calculate the LCM of 920, 392, 728, 919?
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 920, 392, 728, 919.
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}.