A:
Positive:
1 x 5155651555 x 1031130317 x 7365216535 x 14730433283 x 18217851415 x 3643571981 x 2602559905 x 52051
Negative:
-1 x -515565155-5 x -103113031-7 x -73652165-35 x -14730433-283 x -1821785-1415 x -364357-1981 x -260255-9905 x -52051
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 515,565,155, 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 | 515,565,155 | |
| -1 | -515,565,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 515,565,155.
Example:
1 x 515,565,155 = 515,565,155
and
-1 x -515,565,155 = 515,565,155
Notice both answers equal 515,565,155
With that explanation out of the way, let's continue. Next, we take the number 515,565,155 and divide it by 2:
515,565,155 ÷ 2 = 257,782,577.5
If the quotient is a whole number, then 2 and 257,782,577.5 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 | 515,565,155 | |
| -1 | -515,565,155 |
Now, we try dividing 515,565,155 by 3:
515,565,155 ÷ 3 = 171,855,051.6667
If the quotient is a whole number, then 3 and 171,855,051.6667 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 | 515,565,155 | |
| -1 | -515,565,155 |
Let's try dividing by 4:
515,565,155 ÷ 4 = 128,891,288.75
If the quotient is a whole number, then 4 and 128,891,288.75 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 | 515,565,155 | |
| -1 | 515,565,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 283 | 1,415 | 1,981 | 9,905 | 52,051 | 260,255 | 364,357 | 1,821,785 | 14,730,433 | 73,652,165 | 103,113,031 | 515,565,155 |
| -1 | -5 | -7 | -35 | -283 | -1,415 | -1,981 | -9,905 | -52,051 | -260,255 | -364,357 | -1,821,785 | -14,730,433 | -73,652,165 | -103,113,031 | -515,565,155 |
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