A:
Positive:
1 x 12020253119 x 632644923 x 522619731 x 3877501361 x 332971437 x 275063467 x 257393589 x 204079713 x 1685878303 x 144778873 x 1354710741 x 11191
Negative:
-1 x -120202531-19 x -6326449-23 x -5226197-31 x -3877501-361 x -332971-437 x -275063-467 x -257393-589 x -204079-713 x -168587-8303 x -14477-8873 x -13547-10741 x -11191
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 120,202,531, 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 | 120,202,531 | |
| -1 | -120,202,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,202,531.
Example:
1 x 120,202,531 = 120,202,531
and
-1 x -120,202,531 = 120,202,531
Notice both answers equal 120,202,531
With that explanation out of the way, let's continue. Next, we take the number 120,202,531 and divide it by 2:
120,202,531 ÷ 2 = 60,101,265.5
If the quotient is a whole number, then 2 and 60,101,265.5 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 | 120,202,531 | |
| -1 | -120,202,531 |
Now, we try dividing 120,202,531 by 3:
120,202,531 ÷ 3 = 40,067,510.3333
If the quotient is a whole number, then 3 and 40,067,510.3333 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 | 120,202,531 | |
| -1 | -120,202,531 |
Let's try dividing by 4:
120,202,531 ÷ 4 = 30,050,632.75
If the quotient is a whole number, then 4 and 30,050,632.75 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 | 120,202,531 | |
| -1 | 120,202,531 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 31 | 361 | 437 | 467 | 589 | 713 | 8,303 | 8,873 | 10,741 | 11,191 | 13,547 | 14,477 | 168,587 | 204,079 | 257,393 | 275,063 | 332,971 | 3,877,501 | 5,226,197 | 6,326,449 | 120,202,531 |
| -1 | -19 | -23 | -31 | -361 | -437 | -467 | -589 | -713 | -8,303 | -8,873 | -10,741 | -11,191 | -13,547 | -14,477 | -168,587 | -204,079 | -257,393 | -275,063 | -332,971 | -3,877,501 | -5,226,197 | -6,326,449 | -120,202,531 |
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