A:
Positive:
1 x 8558581997 x 12226545731 x 27608329217 x 3944047419 x 20426212933 x 2918039413 x 9092312989 x 65891
Negative:
-1 x -855858199-7 x -122265457-31 x -27608329-217 x -3944047-419 x -2042621-2933 x -291803-9413 x -90923-12989 x -65891
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 855,858,199, 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 | 855,858,199 | |
| -1 | -855,858,199 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 855,858,199.
Example:
1 x 855,858,199 = 855,858,199
and
-1 x -855,858,199 = 855,858,199
Notice both answers equal 855,858,199
With that explanation out of the way, let's continue. Next, we take the number 855,858,199 and divide it by 2:
855,858,199 ÷ 2 = 427,929,099.5
If the quotient is a whole number, then 2 and 427,929,099.5 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 | 855,858,199 | |
| -1 | -855,858,199 |
Now, we try dividing 855,858,199 by 3:
855,858,199 ÷ 3 = 285,286,066.3333
If the quotient is a whole number, then 3 and 285,286,066.3333 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 | 855,858,199 | |
| -1 | -855,858,199 |
Let's try dividing by 4:
855,858,199 ÷ 4 = 213,964,549.75
If the quotient is a whole number, then 4 and 213,964,549.75 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 | 855,858,199 | |
| -1 | 855,858,199 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 217 | 419 | 2,933 | 9,413 | 12,989 | 65,891 | 90,923 | 291,803 | 2,042,621 | 3,944,047 | 27,608,329 | 122,265,457 | 855,858,199 |
| -1 | -7 | -31 | -217 | -419 | -2,933 | -9,413 | -12,989 | -65,891 | -90,923 | -291,803 | -2,042,621 | -3,944,047 | -27,608,329 | -122,265,457 | -855,858,199 |
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