A:
Positive:
1 x 82217755 x 164435519 x 43272525 x 32887195 x 86545361 x 22775475 x 17309911 x 90251805 x 4555
Negative:
-1 x -8221775-5 x -1644355-19 x -432725-25 x -328871-95 x -86545-361 x -22775-475 x -17309-911 x -9025-1805 x -4555
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 8,221,775, 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 | 8,221,775 | |
| -1 | -8,221,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,221,775.
Example:
1 x 8,221,775 = 8,221,775
and
-1 x -8,221,775 = 8,221,775
Notice both answers equal 8,221,775
With that explanation out of the way, let's continue. Next, we take the number 8,221,775 and divide it by 2:
8,221,775 ÷ 2 = 4,110,887.5
If the quotient is a whole number, then 2 and 4,110,887.5 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 | 8,221,775 | |
| -1 | -8,221,775 |
Now, we try dividing 8,221,775 by 3:
8,221,775 ÷ 3 = 2,740,591.6667
If the quotient is a whole number, then 3 and 2,740,591.6667 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 | 8,221,775 | |
| -1 | -8,221,775 |
Let's try dividing by 4:
8,221,775 ÷ 4 = 2,055,443.75
If the quotient is a whole number, then 4 and 2,055,443.75 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 | 8,221,775 | |
| -1 | 8,221,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 361 | 475 | 911 | 1,805 | 4,555 | 9,025 | 17,309 | 22,775 | 86,545 | 328,871 | 432,725 | 1,644,355 | 8,221,775 |
| -1 | -5 | -19 | -25 | -95 | -361 | -475 | -911 | -1,805 | -4,555 | -9,025 | -17,309 | -22,775 | -86,545 | -328,871 | -432,725 | -1,644,355 | -8,221,775 |
Here are some more numbers to try:
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