A:
Positive:
1 x 201133255 x 402266525 x 80453373 x 275525103 x 195275107 x 187975365 x 55105515 x 39055535 x 375951825 x 110212575 x 78112675 x 7519
Negative:
-1 x -20113325-5 x -4022665-25 x -804533-73 x -275525-103 x -195275-107 x -187975-365 x -55105-515 x -39055-535 x -37595-1825 x -11021-2575 x -7811-2675 x -7519
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 20,113,325, 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 | 20,113,325 | |
| -1 | -20,113,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,113,325.
Example:
1 x 20,113,325 = 20,113,325
and
-1 x -20,113,325 = 20,113,325
Notice both answers equal 20,113,325
With that explanation out of the way, let's continue. Next, we take the number 20,113,325 and divide it by 2:
20,113,325 ÷ 2 = 10,056,662.5
If the quotient is a whole number, then 2 and 10,056,662.5 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 | 20,113,325 | |
| -1 | -20,113,325 |
Now, we try dividing 20,113,325 by 3:
20,113,325 ÷ 3 = 6,704,441.6667
If the quotient is a whole number, then 3 and 6,704,441.6667 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 | 20,113,325 | |
| -1 | -20,113,325 |
Let's try dividing by 4:
20,113,325 ÷ 4 = 5,028,331.25
If the quotient is a whole number, then 4 and 5,028,331.25 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 | 20,113,325 | |
| -1 | 20,113,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 73 | 103 | 107 | 365 | 515 | 535 | 1,825 | 2,575 | 2,675 | 7,519 | 7,811 | 11,021 | 37,595 | 39,055 | 55,105 | 187,975 | 195,275 | 275,525 | 804,533 | 4,022,665 | 20,113,325 |
| -1 | -5 | -25 | -73 | -103 | -107 | -365 | -515 | -535 | -1,825 | -2,575 | -2,675 | -7,519 | -7,811 | -11,021 | -37,595 | -39,055 | -55,105 | -187,975 | -195,275 | -275,525 | -804,533 | -4,022,665 | -20,113,325 |
Here are some more numbers to try:
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