A:
Positive:
1 x 680881155 x 1361762319 x 358358589 x 76503595 x 716717445 x 1530071691 x 402658053 x 8455
Negative:
-1 x -68088115-5 x -13617623-19 x -3583585-89 x -765035-95 x -716717-445 x -153007-1691 x -40265-8053 x -8455
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 68,088,115, 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 | 68,088,115 | |
| -1 | -68,088,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,088,115.
Example:
1 x 68,088,115 = 68,088,115
and
-1 x -68,088,115 = 68,088,115
Notice both answers equal 68,088,115
With that explanation out of the way, let's continue. Next, we take the number 68,088,115 and divide it by 2:
68,088,115 ÷ 2 = 34,044,057.5
If the quotient is a whole number, then 2 and 34,044,057.5 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 | 68,088,115 | |
| -1 | -68,088,115 |
Now, we try dividing 68,088,115 by 3:
68,088,115 ÷ 3 = 22,696,038.3333
If the quotient is a whole number, then 3 and 22,696,038.3333 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 | 68,088,115 | |
| -1 | -68,088,115 |
Let's try dividing by 4:
68,088,115 ÷ 4 = 17,022,028.75
If the quotient is a whole number, then 4 and 17,022,028.75 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 | 68,088,115 | |
| -1 | 68,088,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 89 | 95 | 445 | 1,691 | 8,053 | 8,455 | 40,265 | 153,007 | 716,717 | 765,035 | 3,583,585 | 13,617,623 | 68,088,115 |
| -1 | -5 | -19 | -89 | -95 | -445 | -1,691 | -8,053 | -8,455 | -40,265 | -153,007 | -716,717 | -765,035 | -3,583,585 | -13,617,623 | -68,088,115 |
Here are some more numbers to try:
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