A:
Positive:
1 x 664701255 x 1329402525 x 2658805125 x 531761643 x 103375827 x 803753215 x 206754135 x 16075
Negative:
-1 x -66470125-5 x -13294025-25 x -2658805-125 x -531761-643 x -103375-827 x -80375-3215 x -20675-4135 x -16075
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 66,470,125, 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 | 66,470,125 | |
| -1 | -66,470,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,470,125.
Example:
1 x 66,470,125 = 66,470,125
and
-1 x -66,470,125 = 66,470,125
Notice both answers equal 66,470,125
With that explanation out of the way, let's continue. Next, we take the number 66,470,125 and divide it by 2:
66,470,125 ÷ 2 = 33,235,062.5
If the quotient is a whole number, then 2 and 33,235,062.5 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 | 66,470,125 | |
| -1 | -66,470,125 |
Now, we try dividing 66,470,125 by 3:
66,470,125 ÷ 3 = 22,156,708.3333
If the quotient is a whole number, then 3 and 22,156,708.3333 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 | 66,470,125 | |
| -1 | -66,470,125 |
Let's try dividing by 4:
66,470,125 ÷ 4 = 16,617,531.25
If the quotient is a whole number, then 4 and 16,617,531.25 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 | 66,470,125 | |
| -1 | 66,470,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 643 | 827 | 3,215 | 4,135 | 16,075 | 20,675 | 80,375 | 103,375 | 531,761 | 2,658,805 | 13,294,025 | 66,470,125 |
| -1 | -5 | -25 | -125 | -643 | -827 | -3,215 | -4,135 | -16,075 | -20,675 | -80,375 | -103,375 | -531,761 | -2,658,805 | -13,294,025 | -66,470,125 |
Here are some more numbers to try:
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