A:
Positive:
1 x 8213155 x 16426311 x 7466555 x 14933109 x 7535137 x 5995545 x 1507685 x 1199
Negative:
-1 x -821315-5 x -164263-11 x -74665-55 x -14933-109 x -7535-137 x -5995-545 x -1507-685 x -1199
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 821,315, 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 | 821,315 | |
| -1 | -821,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 821,315.
Example:
1 x 821,315 = 821,315
and
-1 x -821,315 = 821,315
Notice both answers equal 821,315
With that explanation out of the way, let's continue. Next, we take the number 821,315 and divide it by 2:
821,315 ÷ 2 = 410,657.5
If the quotient is a whole number, then 2 and 410,657.5 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 | 821,315 | |
| -1 | -821,315 |
Now, we try dividing 821,315 by 3:
821,315 ÷ 3 = 273,771.6667
If the quotient is a whole number, then 3 and 273,771.6667 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 | 821,315 | |
| -1 | -821,315 |
Let's try dividing by 4:
821,315 ÷ 4 = 205,328.75
If the quotient is a whole number, then 4 and 205,328.75 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 | 821,315 | |
| -1 | 821,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 109 | 137 | 545 | 685 | 1,199 | 1,507 | 5,995 | 7,535 | 14,933 | 74,665 | 164,263 | 821,315 |
| -1 | -5 | -11 | -55 | -109 | -137 | -545 | -685 | -1,199 | -1,507 | -5,995 | -7,535 | -14,933 | -74,665 | -164,263 | -821,315 |
Here are some more numbers to try:
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