A:
Positive:
1 x 20826855 x 41653711 x 18933519 x 10961555 x 3786795 x 21923209 x 99651045 x 1993
Negative:
-1 x -2082685-5 x -416537-11 x -189335-19 x -109615-55 x -37867-95 x -21923-209 x -9965-1045 x -1993
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 2,082,685, 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 | 2,082,685 | |
| -1 | -2,082,685 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,082,685.
Example:
1 x 2,082,685 = 2,082,685
and
-1 x -2,082,685 = 2,082,685
Notice both answers equal 2,082,685
With that explanation out of the way, let's continue. Next, we take the number 2,082,685 and divide it by 2:
2,082,685 ÷ 2 = 1,041,342.5
If the quotient is a whole number, then 2 and 1,041,342.5 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 | 2,082,685 | |
| -1 | -2,082,685 |
Now, we try dividing 2,082,685 by 3:
2,082,685 ÷ 3 = 694,228.3333
If the quotient is a whole number, then 3 and 694,228.3333 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 | 2,082,685 | |
| -1 | -2,082,685 |
Let's try dividing by 4:
2,082,685 ÷ 4 = 520,671.25
If the quotient is a whole number, then 4 and 520,671.25 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 | 2,082,685 | |
| -1 | 2,082,685 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 1,993 | 9,965 | 21,923 | 37,867 | 109,615 | 189,335 | 416,537 | 2,082,685 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -1,993 | -9,965 | -21,923 | -37,867 | -109,615 | -189,335 | -416,537 | -2,082,685 |
Here are some more numbers to try:
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