A:
Positive:
1 x 1307124255 x 2614248525 x 522849729 x 4507325145 x 901465725 x 180293841 x 1554254205 x 310856217 x 21025
Negative:
-1 x -130712425-5 x -26142485-25 x -5228497-29 x -4507325-145 x -901465-725 x -180293-841 x -155425-4205 x -31085-6217 x -21025
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 130,712,425, 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 | 130,712,425 | |
| -1 | -130,712,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,712,425.
Example:
1 x 130,712,425 = 130,712,425
and
-1 x -130,712,425 = 130,712,425
Notice both answers equal 130,712,425
With that explanation out of the way, let's continue. Next, we take the number 130,712,425 and divide it by 2:
130,712,425 ÷ 2 = 65,356,212.5
If the quotient is a whole number, then 2 and 65,356,212.5 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 | 130,712,425 | |
| -1 | -130,712,425 |
Now, we try dividing 130,712,425 by 3:
130,712,425 ÷ 3 = 43,570,808.3333
If the quotient is a whole number, then 3 and 43,570,808.3333 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 | 130,712,425 | |
| -1 | -130,712,425 |
Let's try dividing by 4:
130,712,425 ÷ 4 = 32,678,106.25
If the quotient is a whole number, then 4 and 32,678,106.25 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 | 130,712,425 | |
| -1 | 130,712,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 29 | 145 | 725 | 841 | 4,205 | 6,217 | 21,025 | 31,085 | 155,425 | 180,293 | 901,465 | 4,507,325 | 5,228,497 | 26,142,485 | 130,712,425 |
| -1 | -5 | -25 | -29 | -145 | -725 | -841 | -4,205 | -6,217 | -21,025 | -31,085 | -155,425 | -180,293 | -901,465 | -4,507,325 | -5,228,497 | -26,142,485 | -130,712,425 |
Here are some more numbers to try:
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