LCM of 400, 428, 798, 705
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 400, 428, 798, 705 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 400, 428, 798, 705. So, keep reading to learn more.
Given numbers are 400,428,798,705
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 400,428,798,705 is 802628400.
Find LCM of 400,428,798,705 with Prime Factorization
| 2 | 400, 428, 798, 705 |
| 2 | 200, 214, 399, 705 |
| 3 | 100, 107, 399, 705 |
| 5 | 100, 107, 133, 235 |
| 20, 107, 133, 47 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 20 x 107 x 133 x 47 = 802628400
Therefore, the lowest common multiple of 400,428,798,705 is 802628400.
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.
400 x 428 x 798 x 705 = 96315408000
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.
400 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
428 : 1, 2, 4, 107, 214, 428
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
705 : 1, 3, 5, 15, 47, 141, 235, 705
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 400,428,798,705, is 1.
Now, the common factors can be found like this.
400:2x 2x 2x 2x 5x 5
428:2x 2x 107
798:2x 3x 7x 19
705:3x 5x 47
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 3x 5 = 120
Therefore, the value for common factors is 120.
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 = 96315408000/(1x120)
LCM = 96315408000/120
LCM = 802628400
Thus, we can understand that the LCM of 400,428,798,705 is 802628400.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 400, 428, 798, 705
1. What is the LCM of 400, 428, 798, 705?
Answer: LCM of 400, 428, 798, 705 is 802628400.
2. How to calculate the LCM of 400, 428, 798, 705?
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 400, 428, 798, 705.
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}.