A:
Positive:
1 x 7987217 x 11410311 x 7261123 x 3472741 x 1948177 x 10373121 x 6601161 x 4961253 x 3157287 x 2783451 x 1771847 x 943
Negative:
-1 x -798721-7 x -114103-11 x -72611-23 x -34727-41 x -19481-77 x -10373-121 x -6601-161 x -4961-253 x -3157-287 x -2783-451 x -1771-847 x -943
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 798,721, 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 | 798,721 | |
| -1 | -798,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 798,721.
Example:
1 x 798,721 = 798,721
and
-1 x -798,721 = 798,721
Notice both answers equal 798,721
With that explanation out of the way, let's continue. Next, we take the number 798,721 and divide it by 2:
798,721 ÷ 2 = 399,360.5
If the quotient is a whole number, then 2 and 399,360.5 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 | 798,721 | |
| -1 | -798,721 |
Now, we try dividing 798,721 by 3:
798,721 ÷ 3 = 266,240.3333
If the quotient is a whole number, then 3 and 266,240.3333 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 | 798,721 | |
| -1 | -798,721 |
Let's try dividing by 4:
798,721 ÷ 4 = 199,680.25
If the quotient is a whole number, then 4 and 199,680.25 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 | 798,721 | |
| -1 | 798,721 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 23 | 41 | 77 | 121 | 161 | 253 | 287 | 451 | 847 | 943 | 1,771 | 2,783 | 3,157 | 4,961 | 6,601 | 10,373 | 19,481 | 34,727 | 72,611 | 114,103 | 798,721 |
| -1 | -7 | -11 | -23 | -41 | -77 | -121 | -161 | -253 | -287 | -451 | -847 | -943 | -1,771 | -2,783 | -3,157 | -4,961 | -6,601 | -10,373 | -19,481 | -34,727 | -72,611 | -114,103 | -798,721 |
Here are some more numbers to try:
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