A:
Positive:
1 x 1301122137 x 1858745911 x 1182838377 x 1689769131 x 993223917 x 1418891441 x 9029310087 x 12899
Negative:
-1 x -130112213-7 x -18587459-11 x -11828383-77 x -1689769-131 x -993223-917 x -141889-1441 x -90293-10087 x -12899
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 130,112,213, 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 | 130,112,213 | |
| -1 | -130,112,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,112,213.
Example:
1 x 130,112,213 = 130,112,213
and
-1 x -130,112,213 = 130,112,213
Notice both answers equal 130,112,213
With that explanation out of the way, let's continue. Next, we take the number 130,112,213 and divide it by 2:
130,112,213 ÷ 2 = 65,056,106.5
If the quotient is a whole number, then 2 and 65,056,106.5 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 | 130,112,213 | |
| -1 | -130,112,213 |
Now, we try dividing 130,112,213 by 3:
130,112,213 ÷ 3 = 43,370,737.6667
If the quotient is a whole number, then 3 and 43,370,737.6667 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 | 130,112,213 | |
| -1 | -130,112,213 |
Let's try dividing by 4:
130,112,213 ÷ 4 = 32,528,053.25
If the quotient is a whole number, then 4 and 32,528,053.25 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 | 130,112,213 | |
| -1 | 130,112,213 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 131 | 917 | 1,441 | 10,087 | 12,899 | 90,293 | 141,889 | 993,223 | 1,689,769 | 11,828,383 | 18,587,459 | 130,112,213 |
| -1 | -7 | -11 | -77 | -131 | -917 | -1,441 | -10,087 | -12,899 | -90,293 | -141,889 | -993,223 | -1,689,769 | -11,828,383 | -18,587,459 | -130,112,213 |
Here are some more numbers to try:
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