A:
Positive:
1 x 669167755 x 1338335523 x 290942525 x 267667129 x 2307475115 x 581885145 x 461495575 x 116377667 x 100325725 x 922993335 x 200654013 x 16675
Negative:
-1 x -66916775-5 x -13383355-23 x -2909425-25 x -2676671-29 x -2307475-115 x -581885-145 x -461495-575 x -116377-667 x -100325-725 x -92299-3335 x -20065-4013 x -16675
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 66,916,775, 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 | 66,916,775 | |
| -1 | -66,916,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,916,775.
Example:
1 x 66,916,775 = 66,916,775
and
-1 x -66,916,775 = 66,916,775
Notice both answers equal 66,916,775
With that explanation out of the way, let's continue. Next, we take the number 66,916,775 and divide it by 2:
66,916,775 ÷ 2 = 33,458,387.5
If the quotient is a whole number, then 2 and 33,458,387.5 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 | 66,916,775 | |
| -1 | -66,916,775 |
Now, we try dividing 66,916,775 by 3:
66,916,775 ÷ 3 = 22,305,591.6667
If the quotient is a whole number, then 3 and 22,305,591.6667 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 | 66,916,775 | |
| -1 | -66,916,775 |
Let's try dividing by 4:
66,916,775 ÷ 4 = 16,729,193.75
If the quotient is a whole number, then 4 and 16,729,193.75 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 | 66,916,775 | |
| -1 | 66,916,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 25 | 29 | 115 | 145 | 575 | 667 | 725 | 3,335 | 4,013 | 16,675 | 20,065 | 92,299 | 100,325 | 116,377 | 461,495 | 581,885 | 2,307,475 | 2,676,671 | 2,909,425 | 13,383,355 | 66,916,775 |
| -1 | -5 | -23 | -25 | -29 | -115 | -145 | -575 | -667 | -725 | -3,335 | -4,013 | -16,675 | -20,065 | -92,299 | -100,325 | -116,377 | -461,495 | -581,885 | -2,307,475 | -2,676,671 | -2,909,425 | -13,383,355 | -66,916,775 |
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