A:
Positive:
1 x 668541255 x 1337082513 x 514262525 x 267416565 x 1028525125 x 534833325 x 2057051625 x 41141
Negative:
-1 x -66854125-5 x -13370825-13 x -5142625-25 x -2674165-65 x -1028525-125 x -534833-325 x -205705-1625 x -41141
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 66,854,125, 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 | 66,854,125 | |
| -1 | -66,854,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,854,125.
Example:
1 x 66,854,125 = 66,854,125
and
-1 x -66,854,125 = 66,854,125
Notice both answers equal 66,854,125
With that explanation out of the way, let's continue. Next, we take the number 66,854,125 and divide it by 2:
66,854,125 ÷ 2 = 33,427,062.5
If the quotient is a whole number, then 2 and 33,427,062.5 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 | 66,854,125 | |
| -1 | -66,854,125 |
Now, we try dividing 66,854,125 by 3:
66,854,125 ÷ 3 = 22,284,708.3333
If the quotient is a whole number, then 3 and 22,284,708.3333 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 | 66,854,125 | |
| -1 | -66,854,125 |
Let's try dividing by 4:
66,854,125 ÷ 4 = 16,713,531.25
If the quotient is a whole number, then 4 and 16,713,531.25 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 | 66,854,125 | |
| -1 | 66,854,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 41,141 | 205,705 | 534,833 | 1,028,525 | 2,674,165 | 5,142,625 | 13,370,825 | 66,854,125 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -41,141 | -205,705 | -534,833 | -1,028,525 | -2,674,165 | -5,142,625 | -13,370,825 | -66,854,125 |
Here are some more numbers to try:
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