A:
Positive:
1 x 5553205155 x 11106410331 x 1791356561 x 9103615155 x 3582713305 x 18207231891 x 2936659455 x 58733
Negative:
-1 x -555320515-5 x -111064103-31 x -17913565-61 x -9103615-155 x -3582713-305 x -1820723-1891 x -293665-9455 x -58733
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 555,320,515, 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 | 555,320,515 | |
| -1 | -555,320,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 555,320,515.
Example:
1 x 555,320,515 = 555,320,515
and
-1 x -555,320,515 = 555,320,515
Notice both answers equal 555,320,515
With that explanation out of the way, let's continue. Next, we take the number 555,320,515 and divide it by 2:
555,320,515 ÷ 2 = 277,660,257.5
If the quotient is a whole number, then 2 and 277,660,257.5 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 | 555,320,515 | |
| -1 | -555,320,515 |
Now, we try dividing 555,320,515 by 3:
555,320,515 ÷ 3 = 185,106,838.3333
If the quotient is a whole number, then 3 and 185,106,838.3333 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 | 555,320,515 | |
| -1 | -555,320,515 |
Let's try dividing by 4:
555,320,515 ÷ 4 = 138,830,128.75
If the quotient is a whole number, then 4 and 138,830,128.75 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 | 555,320,515 | |
| -1 | 555,320,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 61 | 155 | 305 | 1,891 | 9,455 | 58,733 | 293,665 | 1,820,723 | 3,582,713 | 9,103,615 | 17,913,565 | 111,064,103 | 555,320,515 |
| -1 | -5 | -31 | -61 | -155 | -305 | -1,891 | -9,455 | -58,733 | -293,665 | -1,820,723 | -3,582,713 | -9,103,615 | -17,913,565 | -111,064,103 | -555,320,515 |
Here are some more numbers to try:
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