A:
Positive:
1 x 668117177 x 954453117 x 393010173 x 915229119 x 561443511 x 1307471241 x 538377691 x 8687
Negative:
-1 x -66811717-7 x -9544531-17 x -3930101-73 x -915229-119 x -561443-511 x -130747-1241 x -53837-7691 x -8687
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 66,811,717, 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 | 66,811,717 | |
| -1 | -66,811,717 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,811,717.
Example:
1 x 66,811,717 = 66,811,717
and
-1 x -66,811,717 = 66,811,717
Notice both answers equal 66,811,717
With that explanation out of the way, let's continue. Next, we take the number 66,811,717 and divide it by 2:
66,811,717 ÷ 2 = 33,405,858.5
If the quotient is a whole number, then 2 and 33,405,858.5 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 | 66,811,717 | |
| -1 | -66,811,717 |
Now, we try dividing 66,811,717 by 3:
66,811,717 ÷ 3 = 22,270,572.3333
If the quotient is a whole number, then 3 and 22,270,572.3333 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 | 66,811,717 | |
| -1 | -66,811,717 |
Let's try dividing by 4:
66,811,717 ÷ 4 = 16,702,929.25
If the quotient is a whole number, then 4 and 16,702,929.25 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 | 66,811,717 | |
| -1 | 66,811,717 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 73 | 119 | 511 | 1,241 | 7,691 | 8,687 | 53,837 | 130,747 | 561,443 | 915,229 | 3,930,101 | 9,544,531 | 66,811,717 |
| -1 | -7 | -17 | -73 | -119 | -511 | -1,241 | -7,691 | -8,687 | -53,837 | -130,747 | -561,443 | -915,229 | -3,930,101 | -9,544,531 | -66,811,717 |
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