A:
Positive:
1 x 18810055 x 3762017 x 26871535 x 53743223 x 8435241 x 78051115 x 16871205 x 1561
Negative:
-1 x -1881005-5 x -376201-7 x -268715-35 x -53743-223 x -8435-241 x -7805-1115 x -1687-1205 x -1561
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 1,881,005, 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 | 1,881,005 | |
| -1 | -1,881,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,881,005.
Example:
1 x 1,881,005 = 1,881,005
and
-1 x -1,881,005 = 1,881,005
Notice both answers equal 1,881,005
With that explanation out of the way, let's continue. Next, we take the number 1,881,005 and divide it by 2:
1,881,005 ÷ 2 = 940,502.5
If the quotient is a whole number, then 2 and 940,502.5 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 | 1,881,005 | |
| -1 | -1,881,005 |
Now, we try dividing 1,881,005 by 3:
1,881,005 ÷ 3 = 627,001.6667
If the quotient is a whole number, then 3 and 627,001.6667 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 | 1,881,005 | |
| -1 | -1,881,005 |
Let's try dividing by 4:
1,881,005 ÷ 4 = 470,251.25
If the quotient is a whole number, then 4 and 470,251.25 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 | 1,881,005 | |
| -1 | 1,881,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 223 | 241 | 1,115 | 1,205 | 1,561 | 1,687 | 7,805 | 8,435 | 53,743 | 268,715 | 376,201 | 1,881,005 |
| -1 | -5 | -7 | -35 | -223 | -241 | -1,115 | -1,205 | -1,561 | -1,687 | -7,805 | -8,435 | -53,743 | -268,715 | -376,201 | -1,881,005 |
Here are some more numbers to try:
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