A:
Positive:
1 x 4785312055 x 9570624147 x 10181515235 x 2036303587 x 8152152935 x 1630433469 x 13794517345 x 27589
Negative:
-1 x -478531205-5 x -95706241-47 x -10181515-235 x -2036303-587 x -815215-2935 x -163043-3469 x -137945-17345 x -27589
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 478,531,205, 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 | 478,531,205 | |
| -1 | -478,531,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 478,531,205.
Example:
1 x 478,531,205 = 478,531,205
and
-1 x -478,531,205 = 478,531,205
Notice both answers equal 478,531,205
With that explanation out of the way, let's continue. Next, we take the number 478,531,205 and divide it by 2:
478,531,205 ÷ 2 = 239,265,602.5
If the quotient is a whole number, then 2 and 239,265,602.5 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 | 478,531,205 | |
| -1 | -478,531,205 |
Now, we try dividing 478,531,205 by 3:
478,531,205 ÷ 3 = 159,510,401.6667
If the quotient is a whole number, then 3 and 159,510,401.6667 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 | 478,531,205 | |
| -1 | -478,531,205 |
Let's try dividing by 4:
478,531,205 ÷ 4 = 119,632,801.25
If the quotient is a whole number, then 4 and 119,632,801.25 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 | 478,531,205 | |
| -1 | 478,531,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 235 | 587 | 2,935 | 3,469 | 17,345 | 27,589 | 137,945 | 163,043 | 815,215 | 2,036,303 | 10,181,515 | 95,706,241 | 478,531,205 |
| -1 | -5 | -47 | -235 | -587 | -2,935 | -3,469 | -17,345 | -27,589 | -137,945 | -163,043 | -815,215 | -2,036,303 | -10,181,515 | -95,706,241 | -478,531,205 |
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