A:
Positive:
1 x 1302311997 x 1860445729 x 4490731203 x 641533359 x 3627611787 x 728772513 x 5182310411 x 12509
Negative:
-1 x -130231199-7 x -18604457-29 x -4490731-203 x -641533-359 x -362761-1787 x -72877-2513 x -51823-10411 x -12509
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 130,231,199, 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 | 130,231,199 | |
| -1 | -130,231,199 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,231,199.
Example:
1 x 130,231,199 = 130,231,199
and
-1 x -130,231,199 = 130,231,199
Notice both answers equal 130,231,199
With that explanation out of the way, let's continue. Next, we take the number 130,231,199 and divide it by 2:
130,231,199 ÷ 2 = 65,115,599.5
If the quotient is a whole number, then 2 and 65,115,599.5 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 | 130,231,199 | |
| -1 | -130,231,199 |
Now, we try dividing 130,231,199 by 3:
130,231,199 ÷ 3 = 43,410,399.6667
If the quotient is a whole number, then 3 and 43,410,399.6667 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 | 130,231,199 | |
| -1 | -130,231,199 |
Let's try dividing by 4:
130,231,199 ÷ 4 = 32,557,799.75
If the quotient is a whole number, then 4 and 32,557,799.75 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 | 130,231,199 | |
| -1 | 130,231,199 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 359 | 1,787 | 2,513 | 10,411 | 12,509 | 51,823 | 72,877 | 362,761 | 641,533 | 4,490,731 | 18,604,457 | 130,231,199 |
| -1 | -7 | -29 | -203 | -359 | -1,787 | -2,513 | -10,411 | -12,509 | -51,823 | -72,877 | -362,761 | -641,533 | -4,490,731 | -18,604,457 | -130,231,199 |
Here are some more numbers to try:
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