A:
Positive:
1 x 1300257855 x 2600515723 x 5653295115 x 1130659353 x 3683451765 x 736693203 x 405958119 x 16015
Negative:
-1 x -130025785-5 x -26005157-23 x -5653295-115 x -1130659-353 x -368345-1765 x -73669-3203 x -40595-8119 x -16015
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 130,025,785, 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 | 130,025,785 | |
| -1 | -130,025,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,025,785.
Example:
1 x 130,025,785 = 130,025,785
and
-1 x -130,025,785 = 130,025,785
Notice both answers equal 130,025,785
With that explanation out of the way, let's continue. Next, we take the number 130,025,785 and divide it by 2:
130,025,785 ÷ 2 = 65,012,892.5
If the quotient is a whole number, then 2 and 65,012,892.5 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 | 130,025,785 | |
| -1 | -130,025,785 |
Now, we try dividing 130,025,785 by 3:
130,025,785 ÷ 3 = 43,341,928.3333
If the quotient is a whole number, then 3 and 43,341,928.3333 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 | 130,025,785 | |
| -1 | -130,025,785 |
Let's try dividing by 4:
130,025,785 ÷ 4 = 32,506,446.25
If the quotient is a whole number, then 4 and 32,506,446.25 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 | 130,025,785 | |
| -1 | 130,025,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 353 | 1,765 | 3,203 | 8,119 | 16,015 | 40,595 | 73,669 | 368,345 | 1,130,659 | 5,653,295 | 26,005,157 | 130,025,785 |
| -1 | -5 | -23 | -115 | -353 | -1,765 | -3,203 | -8,119 | -16,015 | -40,595 | -73,669 | -368,345 | -1,130,659 | -5,653,295 | -26,005,157 | -130,025,785 |
Here are some more numbers to try:
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