A:
Positive:
1 x 200203255 x 400406513 x 154002525 x 80081365 x 308005229 x 87425269 x 74425325 x 616011145 x 174851345 x 148852977 x 67253497 x 5725
Negative:
-1 x -20020325-5 x -4004065-13 x -1540025-25 x -800813-65 x -308005-229 x -87425-269 x -74425-325 x -61601-1145 x -17485-1345 x -14885-2977 x -6725-3497 x -5725
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 20,020,325, 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 | 20,020,325 | |
| -1 | -20,020,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,020,325.
Example:
1 x 20,020,325 = 20,020,325
and
-1 x -20,020,325 = 20,020,325
Notice both answers equal 20,020,325
With that explanation out of the way, let's continue. Next, we take the number 20,020,325 and divide it by 2:
20,020,325 ÷ 2 = 10,010,162.5
If the quotient is a whole number, then 2 and 10,010,162.5 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 | 20,020,325 | |
| -1 | -20,020,325 |
Now, we try dividing 20,020,325 by 3:
20,020,325 ÷ 3 = 6,673,441.6667
If the quotient is a whole number, then 3 and 6,673,441.6667 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 | 20,020,325 | |
| -1 | -20,020,325 |
Let's try dividing by 4:
20,020,325 ÷ 4 = 5,005,081.25
If the quotient is a whole number, then 4 and 5,005,081.25 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 | 20,020,325 | |
| -1 | 20,020,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 229 | 269 | 325 | 1,145 | 1,345 | 2,977 | 3,497 | 5,725 | 6,725 | 14,885 | 17,485 | 61,601 | 74,425 | 87,425 | 308,005 | 800,813 | 1,540,025 | 4,004,065 | 20,020,325 |
| -1 | -5 | -13 | -25 | -65 | -229 | -269 | -325 | -1,145 | -1,345 | -2,977 | -3,497 | -5,725 | -6,725 | -14,885 | -17,485 | -61,601 | -74,425 | -87,425 | -308,005 | -800,813 | -1,540,025 | -4,004,065 | -20,020,325 |
Here are some more numbers to try:
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