A:
Positive:
1 x 2123443311 x 193040341 x 517913197 x 107789239 x 88847451 x 470832167 x 97992629 x 8077
Negative:
-1 x -21234433-11 x -1930403-41 x -517913-197 x -107789-239 x -88847-451 x -47083-2167 x -9799-2629 x -8077
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 21,234,433, 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 | 21,234,433 | |
| -1 | -21,234,433 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,234,433.
Example:
1 x 21,234,433 = 21,234,433
and
-1 x -21,234,433 = 21,234,433
Notice both answers equal 21,234,433
With that explanation out of the way, let's continue. Next, we take the number 21,234,433 and divide it by 2:
21,234,433 ÷ 2 = 10,617,216.5
If the quotient is a whole number, then 2 and 10,617,216.5 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 | 21,234,433 | |
| -1 | -21,234,433 |
Now, we try dividing 21,234,433 by 3:
21,234,433 ÷ 3 = 7,078,144.3333
If the quotient is a whole number, then 3 and 7,078,144.3333 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 | 21,234,433 | |
| -1 | -21,234,433 |
Let's try dividing by 4:
21,234,433 ÷ 4 = 5,308,608.25
If the quotient is a whole number, then 4 and 5,308,608.25 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 | 21,234,433 | |
| -1 | 21,234,433 |
If you did it right, you will end up with this table:
| 1 | 11 | 41 | 197 | 239 | 451 | 2,167 | 2,629 | 8,077 | 9,799 | 47,083 | 88,847 | 107,789 | 517,913 | 1,930,403 | 21,234,433 |
| -1 | -11 | -41 | -197 | -239 | -451 | -2,167 | -2,629 | -8,077 | -9,799 | -47,083 | -88,847 | -107,789 | -517,913 | -1,930,403 | -21,234,433 |
Here are some more numbers to try:
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