A:
Positive:
1 x 208853337 x 298361917 x 1228549119 x 175507293 x 71281599 x 348672051 x 101834193 x 4981
Negative:
-1 x -20885333-7 x -2983619-17 x -1228549-119 x -175507-293 x -71281-599 x -34867-2051 x -10183-4193 x -4981
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 20,885,333, 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 | 20,885,333 | |
| -1 | -20,885,333 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,885,333.
Example:
1 x 20,885,333 = 20,885,333
and
-1 x -20,885,333 = 20,885,333
Notice both answers equal 20,885,333
With that explanation out of the way, let's continue. Next, we take the number 20,885,333 and divide it by 2:
20,885,333 ÷ 2 = 10,442,666.5
If the quotient is a whole number, then 2 and 10,442,666.5 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 | 20,885,333 | |
| -1 | -20,885,333 |
Now, we try dividing 20,885,333 by 3:
20,885,333 ÷ 3 = 6,961,777.6667
If the quotient is a whole number, then 3 and 6,961,777.6667 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 | 20,885,333 | |
| -1 | -20,885,333 |
Let's try dividing by 4:
20,885,333 ÷ 4 = 5,221,333.25
If the quotient is a whole number, then 4 and 5,221,333.25 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 | 20,885,333 | |
| -1 | 20,885,333 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 293 | 599 | 2,051 | 4,193 | 4,981 | 10,183 | 34,867 | 71,281 | 175,507 | 1,228,549 | 2,983,619 | 20,885,333 |
| -1 | -7 | -17 | -119 | -293 | -599 | -2,051 | -4,193 | -4,981 | -10,183 | -34,867 | -71,281 | -175,507 | -1,228,549 | -2,983,619 | -20,885,333 |
Here are some more numbers to try:
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