A:
Positive:
1 x 21342240711 x 1940203797 x 2200231139 x 15354131067 x 2000211439 x 1483131529 x 13958313483 x 15829
Negative:
-1 x -213422407-11 x -19402037-97 x -2200231-139 x -1535413-1067 x -200021-1439 x -148313-1529 x -139583-13483 x -15829
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 213,422,407, 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 | 213,422,407 | |
| -1 | -213,422,407 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 213,422,407.
Example:
1 x 213,422,407 = 213,422,407
and
-1 x -213,422,407 = 213,422,407
Notice both answers equal 213,422,407
With that explanation out of the way, let's continue. Next, we take the number 213,422,407 and divide it by 2:
213,422,407 ÷ 2 = 106,711,203.5
If the quotient is a whole number, then 2 and 106,711,203.5 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 | 213,422,407 | |
| -1 | -213,422,407 |
Now, we try dividing 213,422,407 by 3:
213,422,407 ÷ 3 = 71,140,802.3333
If the quotient is a whole number, then 3 and 71,140,802.3333 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 | 213,422,407 | |
| -1 | -213,422,407 |
Let's try dividing by 4:
213,422,407 ÷ 4 = 53,355,601.75
If the quotient is a whole number, then 4 and 53,355,601.75 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 | 213,422,407 | |
| -1 | 213,422,407 |
If you did it right, you will end up with this table:
| 1 | 11 | 97 | 139 | 1,067 | 1,439 | 1,529 | 13,483 | 15,829 | 139,583 | 148,313 | 200,021 | 1,535,413 | 2,200,231 | 19,402,037 | 213,422,407 |
| -1 | -11 | -97 | -139 | -1,067 | -1,439 | -1,529 | -13,483 | -15,829 | -139,583 | -148,313 | -200,021 | -1,535,413 | -2,200,231 | -19,402,037 | -213,422,407 |
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