A:
Positive:
1 x 5613180855 x 11226361731 x 1810703541 x 13690685155 x 3621407205 x 27381371271 x 4416356355 x 88327
Negative:
-1 x -561318085-5 x -112263617-31 x -18107035-41 x -13690685-155 x -3621407-205 x -2738137-1271 x -441635-6355 x -88327
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 561,318,085, 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 | 561,318,085 | |
| -1 | -561,318,085 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 561,318,085.
Example:
1 x 561,318,085 = 561,318,085
and
-1 x -561,318,085 = 561,318,085
Notice both answers equal 561,318,085
With that explanation out of the way, let's continue. Next, we take the number 561,318,085 and divide it by 2:
561,318,085 ÷ 2 = 280,659,042.5
If the quotient is a whole number, then 2 and 280,659,042.5 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 | 561,318,085 | |
| -1 | -561,318,085 |
Now, we try dividing 561,318,085 by 3:
561,318,085 ÷ 3 = 187,106,028.3333
If the quotient is a whole number, then 3 and 187,106,028.3333 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 | 561,318,085 | |
| -1 | -561,318,085 |
Let's try dividing by 4:
561,318,085 ÷ 4 = 140,329,521.25
If the quotient is a whole number, then 4 and 140,329,521.25 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 | 561,318,085 | |
| -1 | 561,318,085 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 41 | 155 | 205 | 1,271 | 6,355 | 88,327 | 441,635 | 2,738,137 | 3,621,407 | 13,690,685 | 18,107,035 | 112,263,617 | 561,318,085 |
| -1 | -5 | -31 | -41 | -155 | -205 | -1,271 | -6,355 | -88,327 | -441,635 | -2,738,137 | -3,621,407 | -13,690,685 | -18,107,035 | -112,263,617 | -561,318,085 |
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