A:
Positive:
1 x 1008232555 x 2016465113 x 775563565 x 155112797 x 1039415485 x 2078831261 x 799556305 x 15991
Negative:
-1 x -100823255-5 x -20164651-13 x -7755635-65 x -1551127-97 x -1039415-485 x -207883-1261 x -79955-6305 x -15991
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 100,823,255, 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 | 100,823,255 | |
| -1 | -100,823,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 100,823,255.
Example:
1 x 100,823,255 = 100,823,255
and
-1 x -100,823,255 = 100,823,255
Notice both answers equal 100,823,255
With that explanation out of the way, let's continue. Next, we take the number 100,823,255 and divide it by 2:
100,823,255 ÷ 2 = 50,411,627.5
If the quotient is a whole number, then 2 and 50,411,627.5 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 | 100,823,255 | |
| -1 | -100,823,255 |
Now, we try dividing 100,823,255 by 3:
100,823,255 ÷ 3 = 33,607,751.6667
If the quotient is a whole number, then 3 and 33,607,751.6667 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 | 100,823,255 | |
| -1 | -100,823,255 |
Let's try dividing by 4:
100,823,255 ÷ 4 = 25,205,813.75
If the quotient is a whole number, then 4 and 25,205,813.75 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 | 100,823,255 | |
| -1 | 100,823,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 97 | 485 | 1,261 | 6,305 | 15,991 | 79,955 | 207,883 | 1,039,415 | 1,551,127 | 7,755,635 | 20,164,651 | 100,823,255 |
| -1 | -5 | -13 | -65 | -97 | -485 | -1,261 | -6,305 | -15,991 | -79,955 | -207,883 | -1,039,415 | -1,551,127 | -7,755,635 | -20,164,651 | -100,823,255 |
Here are some more numbers to try:
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