Find the LCM of 831, 40, 392 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 831, 40, 392. So, keep reading to learn more.
Given numbers are 831,40,392
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 831,40,392 is 1628760.
Find LCM of 831,40,392 with Prime Factorization
2 | 831, 40, 392 |
2 | 831, 20, 196 |
2 | 831, 10, 98 |
831, 5, 49 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 831 x 5 x 49 = 1628760
Therefore, the lowest common multiple of 831,40,392 is 1628760.
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.
831 x 40 x 392 = 13030080
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.
831 : 1, 3, 277, 831
40 : 1, 2, 4, 5, 8, 10, 20, 40
392 : 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 831,40,392, is 1.
Now, the common factors can be found like this.
831:3x 277
40:2x 2x 2x 5
392:2x 2x 2x 7x 7
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 2 = 8
Therefore, the value for common factors is 8.
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 = 13030080/(1x8)
LCM = 13030080/8
LCM = 1628760
Thus, we can understand that the LCM of 831,40,392 is 1628760.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 831, 40, 392?
Answer: LCM of 831, 40, 392 is 1628760.
2. How to calculate the LCM of 831, 40, 392?
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 831, 40, 392.
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}.