A:
Positive:
1 x 200362855 x 400725717 x 117860585 x 235721107 x 187255535 x 374511819 x 110152203 x 9095
Negative:
-1 x -20036285-5 x -4007257-17 x -1178605-85 x -235721-107 x -187255-535 x -37451-1819 x -11015-2203 x -9095
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 20,036,285, 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 | 20,036,285 | |
| -1 | -20,036,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,036,285.
Example:
1 x 20,036,285 = 20,036,285
and
-1 x -20,036,285 = 20,036,285
Notice both answers equal 20,036,285
With that explanation out of the way, let's continue. Next, we take the number 20,036,285 and divide it by 2:
20,036,285 ÷ 2 = 10,018,142.5
If the quotient is a whole number, then 2 and 10,018,142.5 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 | 20,036,285 | |
| -1 | -20,036,285 |
Now, we try dividing 20,036,285 by 3:
20,036,285 ÷ 3 = 6,678,761.6667
If the quotient is a whole number, then 3 and 6,678,761.6667 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 | 20,036,285 | |
| -1 | -20,036,285 |
Let's try dividing by 4:
20,036,285 ÷ 4 = 5,009,071.25
If the quotient is a whole number, then 4 and 5,009,071.25 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 | 20,036,285 | |
| -1 | 20,036,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 107 | 535 | 1,819 | 2,203 | 9,095 | 11,015 | 37,451 | 187,255 | 235,721 | 1,178,605 | 4,007,257 | 20,036,285 |
| -1 | -5 | -17 | -85 | -107 | -535 | -1,819 | -2,203 | -9,095 | -11,015 | -37,451 | -187,255 | -235,721 | -1,178,605 | -4,007,257 | -20,036,285 |
Here are some more numbers to try:
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