A:
Positive:
1 x 231008477 x 330012111 x 210007743 x 53722977 x 300011301 x 76747473 x 488393311 x 6977
Negative:
-1 x -23100847-7 x -3300121-11 x -2100077-43 x -537229-77 x -300011-301 x -76747-473 x -48839-3311 x -6977
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 23,100,847, 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 | 23,100,847 | |
| -1 | -23,100,847 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,100,847.
Example:
1 x 23,100,847 = 23,100,847
and
-1 x -23,100,847 = 23,100,847
Notice both answers equal 23,100,847
With that explanation out of the way, let's continue. Next, we take the number 23,100,847 and divide it by 2:
23,100,847 ÷ 2 = 11,550,423.5
If the quotient is a whole number, then 2 and 11,550,423.5 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 | 23,100,847 | |
| -1 | -23,100,847 |
Now, we try dividing 23,100,847 by 3:
23,100,847 ÷ 3 = 7,700,282.3333
If the quotient is a whole number, then 3 and 7,700,282.3333 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 | 23,100,847 | |
| -1 | -23,100,847 |
Let's try dividing by 4:
23,100,847 ÷ 4 = 5,775,211.75
If the quotient is a whole number, then 4 and 5,775,211.75 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 | 23,100,847 | |
| -1 | 23,100,847 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 43 | 77 | 301 | 473 | 3,311 | 6,977 | 48,839 | 76,747 | 300,011 | 537,229 | 2,100,077 | 3,300,121 | 23,100,847 |
| -1 | -7 | -11 | -43 | -77 | -301 | -473 | -3,311 | -6,977 | -48,839 | -76,747 | -300,011 | -537,229 | -2,100,077 | -3,300,121 | -23,100,847 |
Here are some more numbers to try:
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