A:
Positive:
1 x 19200655 x 3840137 x 27429517 x 11294535 x 5485949 x 3918585 x 22589119 x 16135245 x 7837461 x 4165595 x 3227833 x 2305
Negative:
-1 x -1920065-5 x -384013-7 x -274295-17 x -112945-35 x -54859-49 x -39185-85 x -22589-119 x -16135-245 x -7837-461 x -4165-595 x -3227-833 x -2305
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 1,920,065, 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 | 1,920,065 | |
| -1 | -1,920,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,920,065.
Example:
1 x 1,920,065 = 1,920,065
and
-1 x -1,920,065 = 1,920,065
Notice both answers equal 1,920,065
With that explanation out of the way, let's continue. Next, we take the number 1,920,065 and divide it by 2:
1,920,065 ÷ 2 = 960,032.5
If the quotient is a whole number, then 2 and 960,032.5 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 | 1,920,065 | |
| -1 | -1,920,065 |
Now, we try dividing 1,920,065 by 3:
1,920,065 ÷ 3 = 640,021.6667
If the quotient is a whole number, then 3 and 640,021.6667 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 | 1,920,065 | |
| -1 | -1,920,065 |
Let's try dividing by 4:
1,920,065 ÷ 4 = 480,016.25
If the quotient is a whole number, then 4 and 480,016.25 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 | 1,920,065 | |
| -1 | 1,920,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 17 | 35 | 49 | 85 | 119 | 245 | 461 | 595 | 833 | 2,305 | 3,227 | 4,165 | 7,837 | 16,135 | 22,589 | 39,185 | 54,859 | 112,945 | 274,295 | 384,013 | 1,920,065 |
| -1 | -5 | -7 | -17 | -35 | -49 | -85 | -119 | -245 | -461 | -595 | -833 | -2,305 | -3,227 | -4,165 | -7,837 | -16,135 | -22,589 | -39,185 | -54,859 | -112,945 | -274,295 | -384,013 | -1,920,065 |
Here are some more numbers to try:
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