A:
Positive:
1 x 1909012313 x 146847153 x 360191103 x 185341269 x 70967689 x 277071339 x 142573497 x 5459
Negative:
-1 x -19090123-13 x -1468471-53 x -360191-103 x -185341-269 x -70967-689 x -27707-1339 x -14257-3497 x -5459
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 19,090,123, 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 | 19,090,123 | |
| -1 | -19,090,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,090,123.
Example:
1 x 19,090,123 = 19,090,123
and
-1 x -19,090,123 = 19,090,123
Notice both answers equal 19,090,123
With that explanation out of the way, let's continue. Next, we take the number 19,090,123 and divide it by 2:
19,090,123 ÷ 2 = 9,545,061.5
If the quotient is a whole number, then 2 and 9,545,061.5 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 | 19,090,123 | |
| -1 | -19,090,123 |
Now, we try dividing 19,090,123 by 3:
19,090,123 ÷ 3 = 6,363,374.3333
If the quotient is a whole number, then 3 and 6,363,374.3333 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 | 19,090,123 | |
| -1 | -19,090,123 |
Let's try dividing by 4:
19,090,123 ÷ 4 = 4,772,530.75
If the quotient is a whole number, then 4 and 4,772,530.75 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 | 19,090,123 | |
| -1 | 19,090,123 |
If you did it right, you will end up with this table:
| 1 | 13 | 53 | 103 | 269 | 689 | 1,339 | 3,497 | 5,459 | 14,257 | 27,707 | 70,967 | 185,341 | 360,191 | 1,468,471 | 19,090,123 |
| -1 | -13 | -53 | -103 | -269 | -689 | -1,339 | -3,497 | -5,459 | -14,257 | -27,707 | -70,967 | -185,341 | -360,191 | -1,468,471 | -19,090,123 |
Here are some more numbers to try:
Try the factor calculator