A:
Positive:
1 x 190185555 x 380371137 x 514015185 x 102803223 x 85285461 x 412551115 x 170572305 x 8251
Negative:
-1 x -19018555-5 x -3803711-37 x -514015-185 x -102803-223 x -85285-461 x -41255-1115 x -17057-2305 x -8251
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 19,018,555, 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 | 19,018,555 | |
| -1 | -19,018,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,018,555.
Example:
1 x 19,018,555 = 19,018,555
and
-1 x -19,018,555 = 19,018,555
Notice both answers equal 19,018,555
With that explanation out of the way, let's continue. Next, we take the number 19,018,555 and divide it by 2:
19,018,555 ÷ 2 = 9,509,277.5
If the quotient is a whole number, then 2 and 9,509,277.5 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 | 19,018,555 | |
| -1 | -19,018,555 |
Now, we try dividing 19,018,555 by 3:
19,018,555 ÷ 3 = 6,339,518.3333
If the quotient is a whole number, then 3 and 6,339,518.3333 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 | 19,018,555 | |
| -1 | -19,018,555 |
Let's try dividing by 4:
19,018,555 ÷ 4 = 4,754,638.75
If the quotient is a whole number, then 4 and 4,754,638.75 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 | 19,018,555 | |
| -1 | 19,018,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 223 | 461 | 1,115 | 2,305 | 8,251 | 17,057 | 41,255 | 85,285 | 102,803 | 514,015 | 3,803,711 | 19,018,555 |
| -1 | -5 | -37 | -185 | -223 | -461 | -1,115 | -2,305 | -8,251 | -17,057 | -41,255 | -85,285 | -102,803 | -514,015 | -3,803,711 | -19,018,555 |
Here are some more numbers to try:
Try the factor calculator