A:
Positive:
1 x 18056655 x 36113319 x 9503583 x 2175595 x 19007229 x 7885415 x 43511145 x 1577
Negative:
-1 x -1805665-5 x -361133-19 x -95035-83 x -21755-95 x -19007-229 x -7885-415 x -4351-1145 x -1577
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 1,805,665, 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 | 1,805,665 | |
| -1 | -1,805,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,805,665.
Example:
1 x 1,805,665 = 1,805,665
and
-1 x -1,805,665 = 1,805,665
Notice both answers equal 1,805,665
With that explanation out of the way, let's continue. Next, we take the number 1,805,665 and divide it by 2:
1,805,665 ÷ 2 = 902,832.5
If the quotient is a whole number, then 2 and 902,832.5 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 | 1,805,665 | |
| -1 | -1,805,665 |
Now, we try dividing 1,805,665 by 3:
1,805,665 ÷ 3 = 601,888.3333
If the quotient is a whole number, then 3 and 601,888.3333 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 | 1,805,665 | |
| -1 | -1,805,665 |
Let's try dividing by 4:
1,805,665 ÷ 4 = 451,416.25
If the quotient is a whole number, then 4 and 451,416.25 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 | 1,805,665 | |
| -1 | 1,805,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 83 | 95 | 229 | 415 | 1,145 | 1,577 | 4,351 | 7,885 | 19,007 | 21,755 | 95,035 | 361,133 | 1,805,665 |
| -1 | -5 | -19 | -83 | -95 | -229 | -415 | -1,145 | -1,577 | -4,351 | -7,885 | -19,007 | -21,755 | -95,035 | -361,133 | -1,805,665 |
Here are some more numbers to try:
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