Given numbers are 728,715,440,19

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

The LCM of 728,715,440,19 is 760760.

Find LCM of 728,715,440,19 with Prime Factorization

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

2 x 2 x 2 x 5 x 11 x 13 x 7 x 1 x 1 x 19 = 760760

Therefore, the lowest common multiple of 728,715,440,19 is 760760.

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.

728 x 715 x 440 x 19 = 4351547200

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.

728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

715 : 1, 5, 11, 13, 55, 65, 143, 715

440 : 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440

19 : 1, 19

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,715,440,19, is 1.

Now, the common factors can be found like this.

728:2x 2x 2x 7x 13

715:5x 11x 13

440:2x 2x 2x 5x 11

19:19

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 5x 11x 13 = 5720

Therefore, the value for common factors is 5720.

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 = 4351547200/(1x5720)

LCM = 4351547200/5720

LCM = 760760

Thus, we can understand that the LCM of 728,715,440,19 is 760760.

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

• LCM of 847, 838, 616, 59
• LCM of 558, 203, 580, 29
• LCM of 202, 362, 402, 38
• LCM of 503, 676, 425, 59
• LCM of 715, 499, 443, 51

1. What is the LCM of 728, 715, 440, 19?

Answer: LCM of 728, 715, 440, 19 is 760760.

2. How to calculate the LCM of 728, 715, 440, 19?

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 728, 715, 440, 19.

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}.