Given numbers are 21,687,431

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 21,687,431 is 2072679.

Find LCM of 21,687,431 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

3 x 7 x 229 x 431 = 2072679

Therefore, the lowest common multiple of 21,687,431 is 2072679.

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.

21 x 687 x 431 = 6218037

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.

21 : 1, 3, 7, 21

687 : 1, 3, 229, 687

431 : 1, 431

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 21,687,431, is 1.

Now, the common factors can be found like this.

21:3x 7

687:3x 229

431:431

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

3 = 3

Therefore, the value for common factors is 3.

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 = 6218037/(1x3)

LCM = 6218037/3

LCM = 2072679

Thus, we can understand that the LCM of 21,687,431 is 2072679.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 81, 852, 730
• LCM of 78, 266, 759
• LCM of 26, 743, 776
• LCM of 77, 151, 875
• LCM of 28, 797, 994

1. What is the LCM of 21, 687, 431?

Answer: LCM of 21, 687, 431 is 2072679.

2. How to calculate the LCM of 21, 687, 431?

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 21, 687, 431.

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}.