LCM of 685, 686, 146, 720, 765
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 685, 686, 146, 720, 765 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 685, 686, 146, 720, 765. So, keep reading to learn more.
Given numbers are 685,686,146,720,765
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 685,686,146,720,765 is 41987398320.
Find LCM of 685,686,146,720,765 with Prime Factorization
| 2 | 685, 686, 146, 720, 765 |
| 3 | 685, 343, 73, 360, 765 |
| 3 | 685, 343, 73, 120, 255 |
| 5 | 685, 343, 73, 40, 85 |
| 137, 343, 73, 8, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 5 x 137 x 343 x 73 x 8 x 17 = 41987398320
Therefore, the lowest common multiple of 685,686,146,720,765 is 41987398320.
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.
685 x 686 x 146 x 720 x 765 = 37788658488000
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.
685 : 1, 5, 137, 685
686 : 1, 2, 7, 14, 49, 98, 343, 686
146 : 1, 2, 73, 146
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
765 : 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 685,686,146,720,765, is 1.
Now, the common factors can be found like this.
685:5x 137
686:2x 7x 7x 7
146:2x 73
720:2x 2x 2x 2x 3x 3x 5
765:3x 3x 5x 17
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 5x 5 = 900
Therefore, the value for common factors is 900.
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 = 37788658488000/(1x900)
LCM = 37788658488000/900
LCM = 41987398320
Thus, we can understand that the LCM of 685,686,146,720,765 is 41987398320.
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FAQs on LCM of 685, 686, 146, 720, 765
1. What is the LCM of 685, 686, 146, 720, 765?
Answer: LCM of 685, 686, 146, 720, 765 is 41987398320.
2. How to calculate the LCM of 685, 686, 146, 720, 765?
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 685, 686, 146, 720, 765.
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}.