LCM of 8720, 7290
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 8720, 7290 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 8720, 7290. So, keep reading to learn more.
Given numbers are 8720,7290
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 8720,7290 is 6356880.
Find LCM of 8720,7290 with Prime Factorization
| 2 | 8720, 7290 |
| 5 | 4360, 3645 |
| 872, 729 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 872 x 729 = 6356880
Therefore, the lowest common multiple of 8720,7290 is 6356880.
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.
8720 x 7290 = 63568800
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.
8720 : 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720
7290 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 729, 810, 1215, 1458, 2430, 3645, 7290
10 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 8720,7290, is 10.
Now, the common factors can be found like this.
8720:2x 2x 2x 2x 5x 109
7290:2x 3x 3x 3x 3x 3x 3x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
= 1
Therefore, the value for common factors is 1.
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 = 63568800/(10x1)
LCM = 63568800/10
LCM = 6356880
Thus, we can understand that the LCM of 8720,7290 is 6356880.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 8720, 7290
1. What is the LCM of 8720, 7290?
Answer: LCM of 8720, 7290 is 6356880.
2. How to calculate the LCM of 8720, 7290?
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 8720, 7290.
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}.