A:
Positive:
1 x 200165637 x 285950953 x 377671163 x 122801331 x 60473371 x 539531141 x 175432317 x 8639
Negative:
-1 x -20016563-7 x -2859509-53 x -377671-163 x -122801-331 x -60473-371 x -53953-1141 x -17543-2317 x -8639
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 20,016,563, 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 | 20,016,563 | |
| -1 | -20,016,563 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,016,563.
Example:
1 x 20,016,563 = 20,016,563
and
-1 x -20,016,563 = 20,016,563
Notice both answers equal 20,016,563
With that explanation out of the way, let's continue. Next, we take the number 20,016,563 and divide it by 2:
20,016,563 ÷ 2 = 10,008,281.5
If the quotient is a whole number, then 2 and 10,008,281.5 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 | 20,016,563 | |
| -1 | -20,016,563 |
Now, we try dividing 20,016,563 by 3:
20,016,563 ÷ 3 = 6,672,187.6667
If the quotient is a whole number, then 3 and 6,672,187.6667 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 | 20,016,563 | |
| -1 | -20,016,563 |
Let's try dividing by 4:
20,016,563 ÷ 4 = 5,004,140.75
If the quotient is a whole number, then 4 and 5,004,140.75 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 | 20,016,563 | |
| -1 | 20,016,563 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 163 | 331 | 371 | 1,141 | 2,317 | 8,639 | 17,543 | 53,953 | 60,473 | 122,801 | 377,671 | 2,859,509 | 20,016,563 |
| -1 | -7 | -53 | -163 | -331 | -371 | -1,141 | -2,317 | -8,639 | -17,543 | -53,953 | -60,473 | -122,801 | -377,671 | -2,859,509 | -20,016,563 |
Here are some more numbers to try:
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