A:
Positive:
1 x 1201112913 x 92393317 x 70653723 x 522223139 x 86411221 x 54349289 x 41561299 x 40171391 x 307191807 x 66472363 x 50833197 x 3757
Negative:
-1 x -12011129-13 x -923933-17 x -706537-23 x -522223-139 x -86411-221 x -54349-289 x -41561-299 x -40171-391 x -30719-1807 x -6647-2363 x -5083-3197 x -3757
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 12,011,129, 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 | 12,011,129 | |
| -1 | -12,011,129 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,011,129.
Example:
1 x 12,011,129 = 12,011,129
and
-1 x -12,011,129 = 12,011,129
Notice both answers equal 12,011,129
With that explanation out of the way, let's continue. Next, we take the number 12,011,129 and divide it by 2:
12,011,129 ÷ 2 = 6,005,564.5
If the quotient is a whole number, then 2 and 6,005,564.5 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 | 12,011,129 | |
| -1 | -12,011,129 |
Now, we try dividing 12,011,129 by 3:
12,011,129 ÷ 3 = 4,003,709.6667
If the quotient is a whole number, then 3 and 4,003,709.6667 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 | 12,011,129 | |
| -1 | -12,011,129 |
Let's try dividing by 4:
12,011,129 ÷ 4 = 3,002,782.25
If the quotient is a whole number, then 4 and 3,002,782.25 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 | 12,011,129 | |
| -1 | 12,011,129 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 23 | 139 | 221 | 289 | 299 | 391 | 1,807 | 2,363 | 3,197 | 3,757 | 5,083 | 6,647 | 30,719 | 40,171 | 41,561 | 54,349 | 86,411 | 522,223 | 706,537 | 923,933 | 12,011,129 |
| -1 | -13 | -17 | -23 | -139 | -221 | -289 | -299 | -391 | -1,807 | -2,363 | -3,197 | -3,757 | -5,083 | -6,647 | -30,719 | -40,171 | -41,561 | -54,349 | -86,411 | -522,223 | -706,537 | -923,933 | -12,011,129 |
Here are some more numbers to try:
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