Given numbers are 728,478,117,221

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

The LCM of 728,478,117,221 is 26620776.

Find LCM of 728,478,117,221 with Prime Factorization

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

2 x 13 x 28 x 239 x 9 x 17 = 26620776

Therefore, the lowest common multiple of 728,478,117,221 is 26620776.

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 478 x 117 x 221 = 8997822288

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

478 : 1, 2, 239, 478

117 : 1, 3, 9, 13, 39, 117

221 : 1, 13, 17, 221

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,478,117,221, is 1.

Now, the common factors can be found like this.

728:2x 2x 2x 7x 13

478:2x 239

117:3x 3x 13

221:13x 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 13x 13 = 338

Therefore, the value for common factors is 338.

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 = 8997822288/(1x338)

LCM = 8997822288/338

LCM = 26620776

Thus, we can understand that the LCM of 728,478,117,221 is 26620776.

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

• LCM of 347, 294, 898, 293
• LCM of 210, 389, 220, 742
• LCM of 122, 371, 286, 162
• LCM of 604, 608, 861, 895
• LCM of 203, 928, 401, 106

1. What is the LCM of 728, 478, 117, 221?

Answer: LCM of 728, 478, 117, 221 is 26620776.

2. How to calculate the LCM of 728, 478, 117, 221?

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, 478, 117, 221.

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}.