A:
Positive:
1 x 688310055 x 1376620131 x 222035541 x 1678805155 x 444071205 x 3357611271 x 541556355 x 10831
Negative:
-1 x -68831005-5 x -13766201-31 x -2220355-41 x -1678805-155 x -444071-205 x -335761-1271 x -54155-6355 x -10831
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 68,831,005, 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 | 68,831,005 | |
| -1 | -68,831,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,831,005.
Example:
1 x 68,831,005 = 68,831,005
and
-1 x -68,831,005 = 68,831,005
Notice both answers equal 68,831,005
With that explanation out of the way, let's continue. Next, we take the number 68,831,005 and divide it by 2:
68,831,005 ÷ 2 = 34,415,502.5
If the quotient is a whole number, then 2 and 34,415,502.5 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 | 68,831,005 | |
| -1 | -68,831,005 |
Now, we try dividing 68,831,005 by 3:
68,831,005 ÷ 3 = 22,943,668.3333
If the quotient is a whole number, then 3 and 22,943,668.3333 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 | 68,831,005 | |
| -1 | -68,831,005 |
Let's try dividing by 4:
68,831,005 ÷ 4 = 17,207,751.25
If the quotient is a whole number, then 4 and 17,207,751.25 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 | 68,831,005 | |
| -1 | 68,831,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 41 | 155 | 205 | 1,271 | 6,355 | 10,831 | 54,155 | 335,761 | 444,071 | 1,678,805 | 2,220,355 | 13,766,201 | 68,831,005 |
| -1 | -5 | -31 | -41 | -155 | -205 | -1,271 | -6,355 | -10,831 | -54,155 | -335,761 | -444,071 | -1,678,805 | -2,220,355 | -13,766,201 | -68,831,005 |
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