LCM of 918, 360, 781, 490
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 918, 360, 781, 490 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 918, 360, 781, 490. So, keep reading to learn more.
Given numbers are 918,360,781,490
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 918,360,781,490 is 702618840.
Find LCM of 918,360,781,490 with Prime Factorization
| 2 | 918, 360, 781, 490 |
| 3 | 459, 180, 781, 245 |
| 3 | 153, 60, 781, 245 |
| 5 | 51, 20, 781, 245 |
| 51, 4, 781, 49 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 5 x 51 x 4 x 781 x 49 = 702618840
Therefore, the lowest common multiple of 918,360,781,490 is 702618840.
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.
918 x 360 x 781 x 490 = 126471391200
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.
918 : 1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 102, 153, 306, 459, 918
360 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360
781 : 1, 11, 71, 781
490 : 1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 918,360,781,490, is 1.
Now, the common factors can be found like this.
918:2x 3x 3x 3x 17
360:2x 2x 2x 3x 3x 5
781:11x 71
490:2x 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 3x 3x 5 = 180
Therefore, the value for common factors is 180.
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 = 126471391200/(1x180)
LCM = 126471391200/180
LCM = 702618840
Thus, we can understand that the LCM of 918,360,781,490 is 702618840.
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FAQs on LCM of 918, 360, 781, 490
1. What is the LCM of 918, 360, 781, 490?
Answer: LCM of 918, 360, 781, 490 is 702618840.
2. How to calculate the LCM of 918, 360, 781, 490?
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 918, 360, 781, 490.
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}.