A:
Positive:
1 x 17869855 x 35739723 x 7769541 x 43585115 x 15539205 x 8717379 x 4715943 x 1895
Negative:
-1 x -1786985-5 x -357397-23 x -77695-41 x -43585-115 x -15539-205 x -8717-379 x -4715-943 x -1895
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 1,786,985, 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 | 1,786,985 | |
| -1 | -1,786,985 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,786,985.
Example:
1 x 1,786,985 = 1,786,985
and
-1 x -1,786,985 = 1,786,985
Notice both answers equal 1,786,985
With that explanation out of the way, let's continue. Next, we take the number 1,786,985 and divide it by 2:
1,786,985 ÷ 2 = 893,492.5
If the quotient is a whole number, then 2 and 893,492.5 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 | 1,786,985 | |
| -1 | -1,786,985 |
Now, we try dividing 1,786,985 by 3:
1,786,985 ÷ 3 = 595,661.6667
If the quotient is a whole number, then 3 and 595,661.6667 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 | 1,786,985 | |
| -1 | -1,786,985 |
Let's try dividing by 4:
1,786,985 ÷ 4 = 446,746.25
If the quotient is a whole number, then 4 and 446,746.25 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 | 1,786,985 | |
| -1 | 1,786,985 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 41 | 115 | 205 | 379 | 943 | 1,895 | 4,715 | 8,717 | 15,539 | 43,585 | 77,695 | 357,397 | 1,786,985 |
| -1 | -5 | -23 | -41 | -115 | -205 | -379 | -943 | -1,895 | -4,715 | -8,717 | -15,539 | -43,585 | -77,695 | -357,397 | -1,786,985 |
Here are some more numbers to try:
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