A:
Positive:
1 x 2002243111 x 182022113 x 1540187143 x 140017163 x 122837859 x 233091793 x 111672119 x 9449
Negative:
-1 x -20022431-11 x -1820221-13 x -1540187-143 x -140017-163 x -122837-859 x -23309-1793 x -11167-2119 x -9449
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 20,022,431, 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 | 20,022,431 | |
| -1 | -20,022,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,022,431.
Example:
1 x 20,022,431 = 20,022,431
and
-1 x -20,022,431 = 20,022,431
Notice both answers equal 20,022,431
With that explanation out of the way, let's continue. Next, we take the number 20,022,431 and divide it by 2:
20,022,431 ÷ 2 = 10,011,215.5
If the quotient is a whole number, then 2 and 10,011,215.5 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 | 20,022,431 | |
| -1 | -20,022,431 |
Now, we try dividing 20,022,431 by 3:
20,022,431 ÷ 3 = 6,674,143.6667
If the quotient is a whole number, then 3 and 6,674,143.6667 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 | 20,022,431 | |
| -1 | -20,022,431 |
Let's try dividing by 4:
20,022,431 ÷ 4 = 5,005,607.75
If the quotient is a whole number, then 4 and 5,005,607.75 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 | 20,022,431 | |
| -1 | 20,022,431 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 163 | 859 | 1,793 | 2,119 | 9,449 | 11,167 | 23,309 | 122,837 | 140,017 | 1,540,187 | 1,820,221 | 20,022,431 |
| -1 | -11 | -13 | -143 | -163 | -859 | -1,793 | -2,119 | -9,449 | -11,167 | -23,309 | -122,837 | -140,017 | -1,540,187 | -1,820,221 | -20,022,431 |
Here are some more numbers to try:
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