A:
Positive:
1 x 1008058317 x 1440083331 x 3251801113 x 892087217 x 464543791 x 1274413503 x 287774111 x 24521
Negative:
-1 x -100805831-7 x -14400833-31 x -3251801-113 x -892087-217 x -464543-791 x -127441-3503 x -28777-4111 x -24521
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 100,805,831, 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 | 100,805,831 | |
| -1 | -100,805,831 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 100,805,831.
Example:
1 x 100,805,831 = 100,805,831
and
-1 x -100,805,831 = 100,805,831
Notice both answers equal 100,805,831
With that explanation out of the way, let's continue. Next, we take the number 100,805,831 and divide it by 2:
100,805,831 ÷ 2 = 50,402,915.5
If the quotient is a whole number, then 2 and 50,402,915.5 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 | 100,805,831 | |
| -1 | -100,805,831 |
Now, we try dividing 100,805,831 by 3:
100,805,831 ÷ 3 = 33,601,943.6667
If the quotient is a whole number, then 3 and 33,601,943.6667 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 | 100,805,831 | |
| -1 | -100,805,831 |
Let's try dividing by 4:
100,805,831 ÷ 4 = 25,201,457.75
If the quotient is a whole number, then 4 and 25,201,457.75 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 | 100,805,831 | |
| -1 | 100,805,831 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 113 | 217 | 791 | 3,503 | 4,111 | 24,521 | 28,777 | 127,441 | 464,543 | 892,087 | 3,251,801 | 14,400,833 | 100,805,831 |
| -1 | -7 | -31 | -113 | -217 | -791 | -3,503 | -4,111 | -24,521 | -28,777 | -127,441 | -464,543 | -892,087 | -3,251,801 | -14,400,833 | -100,805,831 |
Here are some more numbers to try:
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