A:
Positive:
1 x 5502112917 x 323653723 x 2392223109 x 504781391 x 1407191291 x 426191853 x 296932507 x 21947
Negative:
-1 x -55021129-17 x -3236537-23 x -2392223-109 x -504781-391 x -140719-1291 x -42619-1853 x -29693-2507 x -21947
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 55,021,129, 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 | 55,021,129 | |
| -1 | -55,021,129 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 55,021,129.
Example:
1 x 55,021,129 = 55,021,129
and
-1 x -55,021,129 = 55,021,129
Notice both answers equal 55,021,129
With that explanation out of the way, let's continue. Next, we take the number 55,021,129 and divide it by 2:
55,021,129 ÷ 2 = 27,510,564.5
If the quotient is a whole number, then 2 and 27,510,564.5 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 | 55,021,129 | |
| -1 | -55,021,129 |
Now, we try dividing 55,021,129 by 3:
55,021,129 ÷ 3 = 18,340,376.3333
If the quotient is a whole number, then 3 and 18,340,376.3333 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 | 55,021,129 | |
| -1 | -55,021,129 |
Let's try dividing by 4:
55,021,129 ÷ 4 = 13,755,282.25
If the quotient is a whole number, then 4 and 13,755,282.25 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 | 55,021,129 | |
| -1 | 55,021,129 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 109 | 391 | 1,291 | 1,853 | 2,507 | 21,947 | 29,693 | 42,619 | 140,719 | 504,781 | 2,392,223 | 3,236,537 | 55,021,129 |
| -1 | -17 | -23 | -109 | -391 | -1,291 | -1,853 | -2,507 | -21,947 | -29,693 | -42,619 | -140,719 | -504,781 | -2,392,223 | -3,236,537 | -55,021,129 |
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