A:
Positive:
1 x 8702055 x 1740417 x 12431523 x 3783535 x 2486347 x 18515115 x 7567161 x 5405235 x 3703329 x 2645529 x 1645805 x 1081
Negative:
-1 x -870205-5 x -174041-7 x -124315-23 x -37835-35 x -24863-47 x -18515-115 x -7567-161 x -5405-235 x -3703-329 x -2645-529 x -1645-805 x -1081
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 870,205, 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 | 870,205 | |
| -1 | -870,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 870,205.
Example:
1 x 870,205 = 870,205
and
-1 x -870,205 = 870,205
Notice both answers equal 870,205
With that explanation out of the way, let's continue. Next, we take the number 870,205 and divide it by 2:
870,205 ÷ 2 = 435,102.5
If the quotient is a whole number, then 2 and 435,102.5 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 | 870,205 | |
| -1 | -870,205 |
Now, we try dividing 870,205 by 3:
870,205 ÷ 3 = 290,068.3333
If the quotient is a whole number, then 3 and 290,068.3333 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 | 870,205 | |
| -1 | -870,205 |
Let's try dividing by 4:
870,205 ÷ 4 = 217,551.25
If the quotient is a whole number, then 4 and 217,551.25 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 | 870,205 | |
| -1 | 870,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 47 | 115 | 161 | 235 | 329 | 529 | 805 | 1,081 | 1,645 | 2,645 | 3,703 | 5,405 | 7,567 | 18,515 | 24,863 | 37,835 | 124,315 | 174,041 | 870,205 |
| -1 | -5 | -7 | -23 | -35 | -47 | -115 | -161 | -235 | -329 | -529 | -805 | -1,081 | -1,645 | -2,645 | -3,703 | -5,405 | -7,567 | -18,515 | -24,863 | -37,835 | -124,315 | -174,041 | -870,205 |
Here are some more numbers to try:
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