A:
Positive:
1 x 201100255 x 402200513 x 154692525 x 80440143 x 46767565 x 309385215 x 93535325 x 61877559 x 359751075 x 187071439 x 139752795 x 7195
Negative:
-1 x -20110025-5 x -4022005-13 x -1546925-25 x -804401-43 x -467675-65 x -309385-215 x -93535-325 x -61877-559 x -35975-1075 x -18707-1439 x -13975-2795 x -7195
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 20,110,025, 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 | 20,110,025 | |
| -1 | -20,110,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,110,025.
Example:
1 x 20,110,025 = 20,110,025
and
-1 x -20,110,025 = 20,110,025
Notice both answers equal 20,110,025
With that explanation out of the way, let's continue. Next, we take the number 20,110,025 and divide it by 2:
20,110,025 ÷ 2 = 10,055,012.5
If the quotient is a whole number, then 2 and 10,055,012.5 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 | 20,110,025 | |
| -1 | -20,110,025 |
Now, we try dividing 20,110,025 by 3:
20,110,025 ÷ 3 = 6,703,341.6667
If the quotient is a whole number, then 3 and 6,703,341.6667 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 | 20,110,025 | |
| -1 | -20,110,025 |
Let's try dividing by 4:
20,110,025 ÷ 4 = 5,027,506.25
If the quotient is a whole number, then 4 and 5,027,506.25 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 | 20,110,025 | |
| -1 | 20,110,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 43 | 65 | 215 | 325 | 559 | 1,075 | 1,439 | 2,795 | 7,195 | 13,975 | 18,707 | 35,975 | 61,877 | 93,535 | 309,385 | 467,675 | 804,401 | 1,546,925 | 4,022,005 | 20,110,025 |
| -1 | -5 | -13 | -25 | -43 | -65 | -215 | -325 | -559 | -1,075 | -1,439 | -2,795 | -7,195 | -13,975 | -18,707 | -35,975 | -61,877 | -93,535 | -309,385 | -467,675 | -804,401 | -1,546,925 | -4,022,005 | -20,110,025 |
Here are some more numbers to try:
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