A:
Positive:
1 x 16616655 x 33233317 x 9774585 x 19549113 x 14705173 x 9605565 x 2941865 x 1921
Negative:
-1 x -1661665-5 x -332333-17 x -97745-85 x -19549-113 x -14705-173 x -9605-565 x -2941-865 x -1921
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 1,661,665, 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 | 1,661,665 | |
| -1 | -1,661,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,661,665.
Example:
1 x 1,661,665 = 1,661,665
and
-1 x -1,661,665 = 1,661,665
Notice both answers equal 1,661,665
With that explanation out of the way, let's continue. Next, we take the number 1,661,665 and divide it by 2:
1,661,665 ÷ 2 = 830,832.5
If the quotient is a whole number, then 2 and 830,832.5 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 | 1,661,665 | |
| -1 | -1,661,665 |
Now, we try dividing 1,661,665 by 3:
1,661,665 ÷ 3 = 553,888.3333
If the quotient is a whole number, then 3 and 553,888.3333 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 | 1,661,665 | |
| -1 | -1,661,665 |
Let's try dividing by 4:
1,661,665 ÷ 4 = 415,416.25
If the quotient is a whole number, then 4 and 415,416.25 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 | 1,661,665 | |
| -1 | 1,661,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 113 | 173 | 565 | 865 | 1,921 | 2,941 | 9,605 | 14,705 | 19,549 | 97,745 | 332,333 | 1,661,665 |
| -1 | -5 | -17 | -85 | -113 | -173 | -565 | -865 | -1,921 | -2,941 | -9,605 | -14,705 | -19,549 | -97,745 | -332,333 | -1,661,665 |
Here are some more numbers to try:
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