LCM of 406, 620, 731, 980
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 406, 620, 731, 980 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 406, 620, 731, 980. So, keep reading to learn more.
Given numbers are 406,620,731,980
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 406,620,731,980 is 644025620.
Find LCM of 406,620,731,980 with Prime Factorization
| 2 | 406, 620, 731, 980 |
| 2 | 203, 310, 731, 490 |
| 5 | 203, 155, 731, 245 |
| 7 | 203, 31, 731, 49 |
| 29, 31, 731, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 29 x 31 x 731 x 7 = 644025620
Therefore, the lowest common multiple of 406,620,731,980 is 644025620.
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.
406 x 620 x 731 x 980 = 180327173600
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.
406 : 1, 2, 7, 14, 29, 58, 203, 406
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
731 : 1, 17, 43, 731
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 406,620,731,980, is 1.
Now, the common factors can be found like this.
406:2x 7x 29
620:2x 2x 5x 31
731:17x 43
980:2x 2x 5x 7x 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 7 = 280
Therefore, the value for common factors is 280.
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 = 180327173600/(1x280)
LCM = 180327173600/280
LCM = 644025620
Thus, we can understand that the LCM of 406,620,731,980 is 644025620.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 406, 620, 731, 980
1. What is the LCM of 406, 620, 731, 980?
Answer: LCM of 406, 620, 731, 980 is 644025620.
2. How to calculate the LCM of 406, 620, 731, 980?
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 406, 620, 731, 980.
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}.