LCM of 220, 721, 990, 280
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 220, 721, 990, 280 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 220, 721, 990, 280. So, keep reading to learn more.
Given numbers are 220,721,990,280
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 220,721,990,280 is 2855160.
Find LCM of 220,721,990,280 with Prime Factorization
| 2 | 220, 721, 990, 280 |
| 2 | 110, 721, 495, 140 |
| 5 | 55, 721, 495, 70 |
| 7 | 11, 721, 99, 14 |
| 11 | 11, 103, 99, 2 |
| 1, 103, 9, 2 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 11 x 1 x 103 x 9 x 2 = 2855160
Therefore, the lowest common multiple of 220,721,990,280 is 2855160.
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.
220 x 721 x 990 x 280 = 43969464000
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.
220 : 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220
721 : 1, 7, 103, 721
990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 220,721,990,280, is 1.
Now, the common factors can be found like this.
220:2x 2x 5x 11
721:7x 103
990:2x 3x 3x 5x 11
280:2x 2x 2x 5x 7
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 5x 5x 7x 11 = 15400
Therefore, the value for common factors is 15400.
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 = 43969464000/(1x15400)
LCM = 43969464000/15400
LCM = 2855160
Thus, we can understand that the LCM of 220,721,990,280 is 2855160.
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FAQs on LCM of 220, 721, 990, 280
1. What is the LCM of 220, 721, 990, 280?
Answer: LCM of 220, 721, 990, 280 is 2855160.
2. How to calculate the LCM of 220, 721, 990, 280?
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 220, 721, 990, 280.
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}.