A:
Positive:
1 x 203420455 x 406840931 x 65619537 x 549785155 x 131239185 x 1099571147 x 177353547 x 5735
Negative:
-1 x -20342045-5 x -4068409-31 x -656195-37 x -549785-155 x -131239-185 x -109957-1147 x -17735-3547 x -5735
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 20,342,045, 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 | 20,342,045 | |
| -1 | -20,342,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,342,045.
Example:
1 x 20,342,045 = 20,342,045
and
-1 x -20,342,045 = 20,342,045
Notice both answers equal 20,342,045
With that explanation out of the way, let's continue. Next, we take the number 20,342,045 and divide it by 2:
20,342,045 ÷ 2 = 10,171,022.5
If the quotient is a whole number, then 2 and 10,171,022.5 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 | 20,342,045 | |
| -1 | -20,342,045 |
Now, we try dividing 20,342,045 by 3:
20,342,045 ÷ 3 = 6,780,681.6667
If the quotient is a whole number, then 3 and 6,780,681.6667 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 | 20,342,045 | |
| -1 | -20,342,045 |
Let's try dividing by 4:
20,342,045 ÷ 4 = 5,085,511.25
If the quotient is a whole number, then 4 and 5,085,511.25 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 | 20,342,045 | |
| -1 | 20,342,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 37 | 155 | 185 | 1,147 | 3,547 | 5,735 | 17,735 | 109,957 | 131,239 | 549,785 | 656,195 | 4,068,409 | 20,342,045 |
| -1 | -5 | -31 | -37 | -155 | -185 | -1,147 | -3,547 | -5,735 | -17,735 | -109,957 | -131,239 | -549,785 | -656,195 | -4,068,409 | -20,342,045 |
Here are some more numbers to try:
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