Find the LCM of 855, 585, 720, 780 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 855, 585, 720, 780. So, keep reading to learn more.
Given numbers are 855,585,720,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 855,585,720,780 is 177840.
Find LCM of 855,585,720,780 with Prime Factorization
2 | 855, 585, 720, 780 |
2 | 855, 585, 360, 390 |
3 | 855, 585, 180, 195 |
3 | 285, 65, 60, 195 |
5 | 95, 65, 20, 65 |
13 | 19, 13, 4, 13 |
19, 1, 4, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 13 x 19 x 1 x 4 x 1 = 177840
Therefore, the lowest common multiple of 855,585,720,780 is 177840.
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.
855 x 585 x 720 x 780 = 280898280000
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.
855 : 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855
585 : 1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585
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
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
15 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 855,585,720,780, is 15.
Now, the common factors can be found like this.
855:3x 3x 5x 19
585:3x 3x 5x 13
720:2x 2x 2x 2x 3x 3x 5
780:2x 2x 3x 5x 13
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 3x 3x 5x 5x 13 = 105300
Therefore, the value for common factors is 105300.
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 = 280898280000/(15x105300)
LCM = 280898280000/1579500
LCM = 177840
Thus, we can understand that the LCM of 855,585,720,780 is 177840.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 855, 585, 720, 780?
Answer: LCM of 855, 585, 720, 780 is 177840.
2. How to calculate the LCM of 855, 585, 720, 780?
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 855, 585, 720, 780.
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}.