A:
Positive:
1 x 231200055 x 462400137 x 62486547 x 491915185 x 124973235 x 983831739 x 132952659 x 8695
Negative:
-1 x -23120005-5 x -4624001-37 x -624865-47 x -491915-185 x -124973-235 x -98383-1739 x -13295-2659 x -8695
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 23,120,005, 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 | 23,120,005 | |
| -1 | -23,120,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,120,005.
Example:
1 x 23,120,005 = 23,120,005
and
-1 x -23,120,005 = 23,120,005
Notice both answers equal 23,120,005
With that explanation out of the way, let's continue. Next, we take the number 23,120,005 and divide it by 2:
23,120,005 ÷ 2 = 11,560,002.5
If the quotient is a whole number, then 2 and 11,560,002.5 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 | 23,120,005 | |
| -1 | -23,120,005 |
Now, we try dividing 23,120,005 by 3:
23,120,005 ÷ 3 = 7,706,668.3333
If the quotient is a whole number, then 3 and 7,706,668.3333 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 | 23,120,005 | |
| -1 | -23,120,005 |
Let's try dividing by 4:
23,120,005 ÷ 4 = 5,780,001.25
If the quotient is a whole number, then 4 and 5,780,001.25 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 | 23,120,005 | |
| -1 | 23,120,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 47 | 185 | 235 | 1,739 | 2,659 | 8,695 | 13,295 | 98,383 | 124,973 | 491,915 | 624,865 | 4,624,001 | 23,120,005 |
| -1 | -5 | -37 | -47 | -185 | -235 | -1,739 | -2,659 | -8,695 | -13,295 | -98,383 | -124,973 | -491,915 | -624,865 | -4,624,001 | -23,120,005 |
Here are some more numbers to try:
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