A:
Positive:
1 x 1307578155 x 2615156337 x 353399541 x 3189215185 x 706799205 x 6378431517 x 861957585 x 17239
Negative:
-1 x -130757815-5 x -26151563-37 x -3533995-41 x -3189215-185 x -706799-205 x -637843-1517 x -86195-7585 x -17239
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 130,757,815, 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 | 130,757,815 | |
| -1 | -130,757,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,757,815.
Example:
1 x 130,757,815 = 130,757,815
and
-1 x -130,757,815 = 130,757,815
Notice both answers equal 130,757,815
With that explanation out of the way, let's continue. Next, we take the number 130,757,815 and divide it by 2:
130,757,815 ÷ 2 = 65,378,907.5
If the quotient is a whole number, then 2 and 65,378,907.5 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 | 130,757,815 | |
| -1 | -130,757,815 |
Now, we try dividing 130,757,815 by 3:
130,757,815 ÷ 3 = 43,585,938.3333
If the quotient is a whole number, then 3 and 43,585,938.3333 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 | 130,757,815 | |
| -1 | -130,757,815 |
Let's try dividing by 4:
130,757,815 ÷ 4 = 32,689,453.75
If the quotient is a whole number, then 4 and 32,689,453.75 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 | 130,757,815 | |
| -1 | 130,757,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 41 | 185 | 205 | 1,517 | 7,585 | 17,239 | 86,195 | 637,843 | 706,799 | 3,189,215 | 3,533,995 | 26,151,563 | 130,757,815 |
| -1 | -5 | -37 | -41 | -185 | -205 | -1,517 | -7,585 | -17,239 | -86,195 | -637,843 | -706,799 | -3,189,215 | -3,533,995 | -26,151,563 | -130,757,815 |
Here are some more numbers to try:
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