LCM of 401, 820, 646, 476
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 401, 820, 646, 476 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 401, 820, 646, 476. So, keep reading to learn more.
Given numbers are 401,820,646,476
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 401,820,646,476 is 743462020.
Find LCM of 401,820,646,476 with Prime Factorization
| 2 | 401, 820, 646, 476 |
| 2 | 401, 410, 323, 238 |
| 17 | 401, 205, 323, 119 |
| 401, 205, 19, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 17 x 401 x 205 x 19 x 7 = 743462020
Therefore, the lowest common multiple of 401,820,646,476 is 743462020.
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.
401 x 820 x 646 x 476 = 101110834720
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.
401 : 1, 401
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
646 : 1, 2, 17, 19, 34, 38, 323, 646
476 : 1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 401,820,646,476, is 1.
Now, the common factors can be found like this.
401:401
820:2x 2x 5x 41
646:2x 17x 19
476:2x 2x 7x 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 2x 17 = 136
Therefore, the value for common factors is 136.
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 = 101110834720/(1x136)
LCM = 101110834720/136
LCM = 743462020
Thus, we can understand that the LCM of 401,820,646,476 is 743462020.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 401, 820, 646, 476
1. What is the LCM of 401, 820, 646, 476?
Answer: LCM of 401, 820, 646, 476 is 743462020.
2. How to calculate the LCM of 401, 820, 646, 476?
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 401, 820, 646, 476.
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}.