A:
Positive:
1 x 200310255 x 40062057 x 286157525 x 80124129 x 69072535 x 572315145 x 138145175 x 114463203 x 98675725 x 276291015 x 197353947 x 5075
Negative:
-1 x -20031025-5 x -4006205-7 x -2861575-25 x -801241-29 x -690725-35 x -572315-145 x -138145-175 x -114463-203 x -98675-725 x -27629-1015 x -19735-3947 x -5075
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 20,031,025, 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 | 20,031,025 | |
| -1 | -20,031,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,031,025.
Example:
1 x 20,031,025 = 20,031,025
and
-1 x -20,031,025 = 20,031,025
Notice both answers equal 20,031,025
With that explanation out of the way, let's continue. Next, we take the number 20,031,025 and divide it by 2:
20,031,025 ÷ 2 = 10,015,512.5
If the quotient is a whole number, then 2 and 10,015,512.5 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 | 20,031,025 | |
| -1 | -20,031,025 |
Now, we try dividing 20,031,025 by 3:
20,031,025 ÷ 3 = 6,677,008.3333
If the quotient is a whole number, then 3 and 6,677,008.3333 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 | 20,031,025 | |
| -1 | -20,031,025 |
Let's try dividing by 4:
20,031,025 ÷ 4 = 5,007,756.25
If the quotient is a whole number, then 4 and 5,007,756.25 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 | 20,031,025 | |
| -1 | 20,031,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 29 | 35 | 145 | 175 | 203 | 725 | 1,015 | 3,947 | 5,075 | 19,735 | 27,629 | 98,675 | 114,463 | 138,145 | 572,315 | 690,725 | 801,241 | 2,861,575 | 4,006,205 | 20,031,025 |
| -1 | -5 | -7 | -25 | -29 | -35 | -145 | -175 | -203 | -725 | -1,015 | -3,947 | -5,075 | -19,735 | -27,629 | -98,675 | -114,463 | -138,145 | -572,315 | -690,725 | -801,241 | -2,861,575 | -4,006,205 | -20,031,025 |
Here are some more numbers to try:
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