A:
Positive:
1 x 685500855 x 1371001737 x 1852705107 x 640655185 x 370541535 x 1281313463 x 197953959 x 17315
Negative:
-1 x -68550085-5 x -13710017-37 x -1852705-107 x -640655-185 x -370541-535 x -128131-3463 x -19795-3959 x -17315
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 68,550,085, 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 | 68,550,085 | |
| -1 | -68,550,085 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,550,085.
Example:
1 x 68,550,085 = 68,550,085
and
-1 x -68,550,085 = 68,550,085
Notice both answers equal 68,550,085
With that explanation out of the way, let's continue. Next, we take the number 68,550,085 and divide it by 2:
68,550,085 ÷ 2 = 34,275,042.5
If the quotient is a whole number, then 2 and 34,275,042.5 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 | 68,550,085 | |
| -1 | -68,550,085 |
Now, we try dividing 68,550,085 by 3:
68,550,085 ÷ 3 = 22,850,028.3333
If the quotient is a whole number, then 3 and 22,850,028.3333 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 | 68,550,085 | |
| -1 | -68,550,085 |
Let's try dividing by 4:
68,550,085 ÷ 4 = 17,137,521.25
If the quotient is a whole number, then 4 and 17,137,521.25 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 | 68,550,085 | |
| -1 | 68,550,085 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 107 | 185 | 535 | 3,463 | 3,959 | 17,315 | 19,795 | 128,131 | 370,541 | 640,655 | 1,852,705 | 13,710,017 | 68,550,085 |
| -1 | -5 | -37 | -107 | -185 | -535 | -3,463 | -3,959 | -17,315 | -19,795 | -128,131 | -370,541 | -640,655 | -1,852,705 | -13,710,017 | -68,550,085 |
Here are some more numbers to try:
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