A:
Positive:
1 x 18097317 x 25853311 x 16452119 x 9524977 x 23503133 x 13607209 x 86591237 x 1463
Negative:
-1 x -1809731-7 x -258533-11 x -164521-19 x -95249-77 x -23503-133 x -13607-209 x -8659-1237 x -1463
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 1,809,731, 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 | 1,809,731 | |
| -1 | -1,809,731 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,809,731.
Example:
1 x 1,809,731 = 1,809,731
and
-1 x -1,809,731 = 1,809,731
Notice both answers equal 1,809,731
With that explanation out of the way, let's continue. Next, we take the number 1,809,731 and divide it by 2:
1,809,731 ÷ 2 = 904,865.5
If the quotient is a whole number, then 2 and 904,865.5 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 | 1,809,731 | |
| -1 | -1,809,731 |
Now, we try dividing 1,809,731 by 3:
1,809,731 ÷ 3 = 603,243.6667
If the quotient is a whole number, then 3 and 603,243.6667 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 | 1,809,731 | |
| -1 | -1,809,731 |
Let's try dividing by 4:
1,809,731 ÷ 4 = 452,432.75
If the quotient is a whole number, then 4 and 452,432.75 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 | 1,809,731 | |
| -1 | 1,809,731 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 19 | 77 | 133 | 209 | 1,237 | 1,463 | 8,659 | 13,607 | 23,503 | 95,249 | 164,521 | 258,533 | 1,809,731 |
| -1 | -7 | -11 | -19 | -77 | -133 | -209 | -1,237 | -1,463 | -8,659 | -13,607 | -23,503 | -95,249 | -164,521 | -258,533 | -1,809,731 |
Here are some more numbers to try:
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