LCM of 128, 162, 240, 945
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 128, 162, 240, 945 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 128, 162, 240, 945. So, keep reading to learn more.
Given numbers are 128,162,240,945
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 128,162,240,945 is 362880.
Find LCM of 128,162,240,945 with Prime Factorization
| 2 | 128, 162, 240, 945 |
| 2 | 64, 81, 120, 945 |
| 2 | 32, 81, 60, 945 |
| 2 | 16, 81, 30, 945 |
| 3 | 8, 81, 15, 945 |
| 3 | 8, 27, 5, 315 |
| 3 | 8, 9, 5, 105 |
| 5 | 8, 3, 5, 35 |
| 8, 3, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 8 x 3 x 1 x 7 = 362880
Therefore, the lowest common multiple of 128,162,240,945 is 362880.
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 162 x 240 x 945 = 4702924800
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
162 : 1, 2, 3, 6, 9, 18, 27, 54, 81, 162
240 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240
945 : 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,162,240,945, is 1.
Now, the common factors can be found like this.
128:2x 2x 2x 2x 2x 2x 2
162:2x 3x 3x 3x 3
240:2x 2x 2x 2x 3x 5
945:3x 3x 3x 5x 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 2x 2x 2x 3x 3x 3x 3x 5 = 12960
Therefore, the value for common factors is 12960.
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 = 4702924800/(1x12960)
LCM = 4702924800/12960
LCM = 362880
Thus, we can understand that the LCM of 128,162,240,945 is 362880.
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FAQs on LCM of 128, 162, 240, 945
1. What is the LCM of 128, 162, 240, 945?
Answer: LCM of 128, 162, 240, 945 is 362880.
2. How to calculate the LCM of 128, 162, 240, 945?
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, 162, 240, 945.
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}.