A:
Positive:
1 x 204442217 x 292060331 x 65949143 x 47544749 x 417229217 x 94213301 x 67921313 x 653171333 x 153371519 x 134592107 x 97032191 x 9331
Negative:
-1 x -20444221-7 x -2920603-31 x -659491-43 x -475447-49 x -417229-217 x -94213-301 x -67921-313 x -65317-1333 x -15337-1519 x -13459-2107 x -9703-2191 x -9331
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 20,444,221, 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 | 20,444,221 | |
| -1 | -20,444,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,444,221.
Example:
1 x 20,444,221 = 20,444,221
and
-1 x -20,444,221 = 20,444,221
Notice both answers equal 20,444,221
With that explanation out of the way, let's continue. Next, we take the number 20,444,221 and divide it by 2:
20,444,221 ÷ 2 = 10,222,110.5
If the quotient is a whole number, then 2 and 10,222,110.5 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 | 20,444,221 | |
| -1 | -20,444,221 |
Now, we try dividing 20,444,221 by 3:
20,444,221 ÷ 3 = 6,814,740.3333
If the quotient is a whole number, then 3 and 6,814,740.3333 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 | 20,444,221 | |
| -1 | -20,444,221 |
Let's try dividing by 4:
20,444,221 ÷ 4 = 5,111,055.25
If the quotient is a whole number, then 4 and 5,111,055.25 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 | 20,444,221 | |
| -1 | 20,444,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 43 | 49 | 217 | 301 | 313 | 1,333 | 1,519 | 2,107 | 2,191 | 9,331 | 9,703 | 13,459 | 15,337 | 65,317 | 67,921 | 94,213 | 417,229 | 475,447 | 659,491 | 2,920,603 | 20,444,221 |
| -1 | -7 | -31 | -43 | -49 | -217 | -301 | -313 | -1,333 | -1,519 | -2,107 | -2,191 | -9,331 | -9,703 | -13,459 | -15,337 | -65,317 | -67,921 | -94,213 | -417,229 | -475,447 | -659,491 | -2,920,603 | -20,444,221 |
Here are some more numbers to try:
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