A:
Positive:
1 x 200170255 x 40034057 x 285957525 x 80068135 x 571915107 x 187075175 x 114383535 x 37415749 x 267251069 x 187252675 x 74833745 x 5345
Negative:
-1 x -20017025-5 x -4003405-7 x -2859575-25 x -800681-35 x -571915-107 x -187075-175 x -114383-535 x -37415-749 x -26725-1069 x -18725-2675 x -7483-3745 x -5345
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 20,017,025, 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 | 20,017,025 | |
| -1 | -20,017,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,017,025.
Example:
1 x 20,017,025 = 20,017,025
and
-1 x -20,017,025 = 20,017,025
Notice both answers equal 20,017,025
With that explanation out of the way, let's continue. Next, we take the number 20,017,025 and divide it by 2:
20,017,025 ÷ 2 = 10,008,512.5
If the quotient is a whole number, then 2 and 10,008,512.5 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 | 20,017,025 | |
| -1 | -20,017,025 |
Now, we try dividing 20,017,025 by 3:
20,017,025 ÷ 3 = 6,672,341.6667
If the quotient is a whole number, then 3 and 6,672,341.6667 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 | 20,017,025 | |
| -1 | -20,017,025 |
Let's try dividing by 4:
20,017,025 ÷ 4 = 5,004,256.25
If the quotient is a whole number, then 4 and 5,004,256.25 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 | 20,017,025 | |
| -1 | 20,017,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 107 | 175 | 535 | 749 | 1,069 | 2,675 | 3,745 | 5,345 | 7,483 | 18,725 | 26,725 | 37,415 | 114,383 | 187,075 | 571,915 | 800,681 | 2,859,575 | 4,003,405 | 20,017,025 |
| -1 | -5 | -7 | -25 | -35 | -107 | -175 | -535 | -749 | -1,069 | -2,675 | -3,745 | -5,345 | -7,483 | -18,725 | -26,725 | -37,415 | -114,383 | -187,075 | -571,915 | -800,681 | -2,859,575 | -4,003,405 | -20,017,025 |
Here are some more numbers to try:
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