Given numbers are 128,720,163,765

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

The LCM of 128,720,163,765 is 15960960.

Find LCM of 128,720,163,765 with Prime Factorization

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

2 x 2 x 2 x 2 x 3 x 3 x 5 x 8 x 1 x 163 x 17 = 15960960

Therefore, the lowest common multiple of 128,720,163,765 is 15960960.

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.

128 x 720 x 163 x 765 = 11491891200

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.

128 : 1, 2, 4, 8, 16, 32, 64, 128

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

163 : 1, 163

765 : 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,720,163,765, is 1.

Now, the common factors can be found like this.

128:2x 2x 2x 2x 2x 2x 2

720:2x 2x 2x 2x 3x 3x 5

163:163

765:3x 3x 5x 17

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 2x 3x 3x 5 = 720

Therefore, the value for common factors is 720.

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 = 11491891200/(1x720)

LCM = 11491891200/720

LCM = 15960960

Thus, we can understand that the LCM of 128,720,163,765 is 15960960.

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

• LCM of 947, 740, 180, 829
• LCM of 675, 993, 307, 267
• LCM of 232, 601, 910, 444
• LCM of 515, 372, 354, 346
• LCM of 360, 616, 400, 898

1. What is the LCM of 128, 720, 163, 765?

Answer: LCM of 128, 720, 163, 765 is 15960960.

2. How to calculate the LCM of 128, 720, 163, 765?

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 128, 720, 163, 765.

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}.