A:
Positive:
1 x 5052366655 x 10104733337 x 13655045185 x 2731009773 x 6536053533 x 1430053865 x 13072117665 x 28601
Negative:
-1 x -505236665-5 x -101047333-37 x -13655045-185 x -2731009-773 x -653605-3533 x -143005-3865 x -130721-17665 x -28601
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 505,236,665, 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 | 505,236,665 | |
| -1 | -505,236,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 505,236,665.
Example:
1 x 505,236,665 = 505,236,665
and
-1 x -505,236,665 = 505,236,665
Notice both answers equal 505,236,665
With that explanation out of the way, let's continue. Next, we take the number 505,236,665 and divide it by 2:
505,236,665 ÷ 2 = 252,618,332.5
If the quotient is a whole number, then 2 and 252,618,332.5 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 | 505,236,665 | |
| -1 | -505,236,665 |
Now, we try dividing 505,236,665 by 3:
505,236,665 ÷ 3 = 168,412,221.6667
If the quotient is a whole number, then 3 and 168,412,221.6667 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 | 505,236,665 | |
| -1 | -505,236,665 |
Let's try dividing by 4:
505,236,665 ÷ 4 = 126,309,166.25
If the quotient is a whole number, then 4 and 126,309,166.25 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 | 505,236,665 | |
| -1 | 505,236,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 773 | 3,533 | 3,865 | 17,665 | 28,601 | 130,721 | 143,005 | 653,605 | 2,731,009 | 13,655,045 | 101,047,333 | 505,236,665 |
| -1 | -5 | -37 | -185 | -773 | -3,533 | -3,865 | -17,665 | -28,601 | -130,721 | -143,005 | -653,605 | -2,731,009 | -13,655,045 | -101,047,333 | -505,236,665 |
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