A:
Positive:
1 x 28870317 x 41243319 x 15194949 x 58919133 x 21707343 x 8417443 x 6517931 x 3101
Negative:
-1 x -2887031-7 x -412433-19 x -151949-49 x -58919-133 x -21707-343 x -8417-443 x -6517-931 x -3101
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 2,887,031, 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 | 2,887,031 | |
| -1 | -2,887,031 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,887,031.
Example:
1 x 2,887,031 = 2,887,031
and
-1 x -2,887,031 = 2,887,031
Notice both answers equal 2,887,031
With that explanation out of the way, let's continue. Next, we take the number 2,887,031 and divide it by 2:
2,887,031 ÷ 2 = 1,443,515.5
If the quotient is a whole number, then 2 and 1,443,515.5 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 | 2,887,031 | |
| -1 | -2,887,031 |
Now, we try dividing 2,887,031 by 3:
2,887,031 ÷ 3 = 962,343.6667
If the quotient is a whole number, then 3 and 962,343.6667 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 | 2,887,031 | |
| -1 | -2,887,031 |
Let's try dividing by 4:
2,887,031 ÷ 4 = 721,757.75
If the quotient is a whole number, then 4 and 721,757.75 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 | 2,887,031 | |
| -1 | 2,887,031 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 49 | 133 | 343 | 443 | 931 | 3,101 | 6,517 | 8,417 | 21,707 | 58,919 | 151,949 | 412,433 | 2,887,031 |
| -1 | -7 | -19 | -49 | -133 | -343 | -443 | -931 | -3,101 | -6,517 | -8,417 | -21,707 | -58,919 | -151,949 | -412,433 | -2,887,031 |
Here are some more numbers to try:
Try the factor calculator