LCM of 560, 210, 140, 640, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 560, 210, 140, 640, 646 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 560, 210, 140, 640, 646. So, keep reading to learn more.
Given numbers are 560,210,140,640,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 560,210,140,640,646 is 4341120.
Find LCM of 560,210,140,640,646 with Prime Factorization
| 2 | 560, 210, 140, 640, 646 |
| 2 | 280, 105, 70, 320, 323 |
| 2 | 140, 105, 35, 160, 323 |
| 2 | 70, 105, 35, 80, 323 |
| 5 | 35, 105, 35, 40, 323 |
| 7 | 7, 21, 7, 8, 323 |
| 1, 3, 1, 8, 323 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 5 x 7 x 1 x 3 x 1 x 8 x 323 = 4341120
Therefore, the lowest common multiple of 560,210,140,640,646 is 4341120.
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.
560 x 210 x 140 x 640 x 646 = 6806876160000
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.
560 : 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560
210 : 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
140 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
646 : 1, 2, 17, 19, 34, 38, 323, 646
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 560,210,140,640,646, is 2.
Now, the common factors can be found like this.
560:2x 2x 2x 2x 5x 7
210:2x 3x 5x 7
140:2x 2x 5x 7
640:2x 2x 2x 2x 2x 2x 2x 5
646:2x 17x 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 2x 2x 2x 5x 5x 5x 7x 7 = 784000
Therefore, the value for common factors is 784000.
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 = 6806876160000/(2x784000)
LCM = 6806876160000/1568000
LCM = 4341120
Thus, we can understand that the LCM of 560,210,140,640,646 is 4341120.
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FAQs on LCM of 560, 210, 140, 640, 646
1. What is the LCM of 560, 210, 140, 640, 646?
Answer: LCM of 560, 210, 140, 640, 646 is 4341120.
2. How to calculate the LCM of 560, 210, 140, 640, 646?
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 560, 210, 140, 640, 646.
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}.