A:
Positive:
1 x 1204251255 x 2408502523 x 523587525 x 4817005115 x 1047175125 x 963401575 x 2094352875 x 41887
Negative:
-1 x -120425125-5 x -24085025-23 x -5235875-25 x -4817005-115 x -1047175-125 x -963401-575 x -209435-2875 x -41887
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 120,425,125, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 120,425,125 | |
| -1 | -120,425,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,425,125.
Example:
1 x 120,425,125 = 120,425,125
and
-1 x -120,425,125 = 120,425,125
Notice both answers equal 120,425,125
With that explanation out of the way, let's continue. Next, we take the number 120,425,125 and divide it by 2:
120,425,125 ÷ 2 = 60,212,562.5
If the quotient is a whole number, then 2 and 60,212,562.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 120,425,125 | |
| -1 | -120,425,125 |
Now, we try dividing 120,425,125 by 3:
120,425,125 ÷ 3 = 40,141,708.3333
If the quotient is a whole number, then 3 and 40,141,708.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 120,425,125 | |
| -1 | -120,425,125 |
Let's try dividing by 4:
120,425,125 ÷ 4 = 30,106,281.25
If the quotient is a whole number, then 4 and 30,106,281.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 120,425,125 | |
| -1 | 120,425,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 25 | 115 | 125 | 575 | 2,875 | 41,887 | 209,435 | 963,401 | 1,047,175 | 4,817,005 | 5,235,875 | 24,085,025 | 120,425,125 |
| -1 | -5 | -23 | -25 | -115 | -125 | -575 | -2,875 | -41,887 | -209,435 | -963,401 | -1,047,175 | -4,817,005 | -5,235,875 | -24,085,025 | -120,425,125 |
Here are some more numbers to try:
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