LCM of 720, 669, 646, 684, 798
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 720, 669, 646, 684, 798 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 720, 669, 646, 684, 798. So, keep reading to learn more.
Given numbers are 720,669,646,684,798
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 720,669,646,684,798 is 363026160.
Find LCM of 720,669,646,684,798 with Prime Factorization
| 2 | 720, 669, 646, 684, 798 |
| 2 | 360, 669, 323, 342, 399 |
| 3 | 180, 669, 323, 171, 399 |
| 3 | 60, 223, 323, 57, 133 |
| 19 | 20, 223, 323, 19, 133 |
| 20, 223, 17, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 19 x 20 x 223 x 17 x 1 x 7 = 363026160
Therefore, the lowest common multiple of 720,669,646,684,798 is 363026160.
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.
720 x 669 x 646 x 684 x 798 = 169843967112960
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.
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
669 : 1, 3, 223, 669
646 : 1, 2, 17, 19, 34, 38, 323, 646
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 720,669,646,684,798, is 1.
Now, the common factors can be found like this.
720:2x 2x 2x 2x 3x 3x 5
669:3x 223
646:2x 17x 19
684:2x 2x 3x 3x 19
798:2x 3x 7x 19
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 3x 3x 3x 3x 19x 19 = 467856
Therefore, the value for common factors is 467856.
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 = 169843967112960/(1x467856)
LCM = 169843967112960/467856
LCM = 363026160
Thus, we can understand that the LCM of 720,669,646,684,798 is 363026160.
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FAQs on LCM of 720, 669, 646, 684, 798
1. What is the LCM of 720, 669, 646, 684, 798?
Answer: LCM of 720, 669, 646, 684, 798 is 363026160.
2. How to calculate the LCM of 720, 669, 646, 684, 798?
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 720, 669, 646, 684, 798.
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}.