A:
Positive:
1 x 196280455 x 392560919 x 103305595 x 206611307 x 63935673 x 291651535 x 127873365 x 5833
Negative:
-1 x -19628045-5 x -3925609-19 x -1033055-95 x -206611-307 x -63935-673 x -29165-1535 x -12787-3365 x -5833
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 19,628,045, 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 | 19,628,045 | |
| -1 | -19,628,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,628,045.
Example:
1 x 19,628,045 = 19,628,045
and
-1 x -19,628,045 = 19,628,045
Notice both answers equal 19,628,045
With that explanation out of the way, let's continue. Next, we take the number 19,628,045 and divide it by 2:
19,628,045 ÷ 2 = 9,814,022.5
If the quotient is a whole number, then 2 and 9,814,022.5 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 | 19,628,045 | |
| -1 | -19,628,045 |
Now, we try dividing 19,628,045 by 3:
19,628,045 ÷ 3 = 6,542,681.6667
If the quotient is a whole number, then 3 and 6,542,681.6667 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 | 19,628,045 | |
| -1 | -19,628,045 |
Let's try dividing by 4:
19,628,045 ÷ 4 = 4,907,011.25
If the quotient is a whole number, then 4 and 4,907,011.25 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 | 19,628,045 | |
| -1 | 19,628,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 307 | 673 | 1,535 | 3,365 | 5,833 | 12,787 | 29,165 | 63,935 | 206,611 | 1,033,055 | 3,925,609 | 19,628,045 |
| -1 | -5 | -19 | -95 | -307 | -673 | -1,535 | -3,365 | -5,833 | -12,787 | -29,165 | -63,935 | -206,611 | -1,033,055 | -3,925,609 | -19,628,045 |
Here are some more numbers to try:
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