A:
Positive:
1 x 81543184317 x 4796657931 x 26304253113 x 7216211527 x 15473091921 x 4244833503 x 23278113693 x 59551
Negative:
-1 x -815431843-17 x -47966579-31 x -26304253-113 x -7216211-527 x -1547309-1921 x -424483-3503 x -232781-13693 x -59551
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 815,431,843, 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 | 815,431,843 | |
| -1 | -815,431,843 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 815,431,843.
Example:
1 x 815,431,843 = 815,431,843
and
-1 x -815,431,843 = 815,431,843
Notice both answers equal 815,431,843
With that explanation out of the way, let's continue. Next, we take the number 815,431,843 and divide it by 2:
815,431,843 ÷ 2 = 407,715,921.5
If the quotient is a whole number, then 2 and 407,715,921.5 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 | 815,431,843 | |
| -1 | -815,431,843 |
Now, we try dividing 815,431,843 by 3:
815,431,843 ÷ 3 = 271,810,614.3333
If the quotient is a whole number, then 3 and 271,810,614.3333 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 | 815,431,843 | |
| -1 | -815,431,843 |
Let's try dividing by 4:
815,431,843 ÷ 4 = 203,857,960.75
If the quotient is a whole number, then 4 and 203,857,960.75 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 | 815,431,843 | |
| -1 | 815,431,843 |
If you did it right, you will end up with this table:
| 1 | 17 | 31 | 113 | 527 | 1,921 | 3,503 | 13,693 | 59,551 | 232,781 | 424,483 | 1,547,309 | 7,216,211 | 26,304,253 | 47,966,579 | 815,431,843 |
| -1 | -17 | -31 | -113 | -527 | -1,921 | -3,503 | -13,693 | -59,551 | -232,781 | -424,483 | -1,547,309 | -7,216,211 | -26,304,253 | -47,966,579 | -815,431,843 |
Here are some more numbers to try:
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