A:
Positive:
1 x 288649977 x 412357117 x 169794143 x 671279119 x 242563301 x 95897731 x 394875117 x 5641
Negative:
-1 x -28864997-7 x -4123571-17 x -1697941-43 x -671279-119 x -242563-301 x -95897-731 x -39487-5117 x -5641
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 28,864,997, 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 | 28,864,997 | |
| -1 | -28,864,997 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,864,997.
Example:
1 x 28,864,997 = 28,864,997
and
-1 x -28,864,997 = 28,864,997
Notice both answers equal 28,864,997
With that explanation out of the way, let's continue. Next, we take the number 28,864,997 and divide it by 2:
28,864,997 ÷ 2 = 14,432,498.5
If the quotient is a whole number, then 2 and 14,432,498.5 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 | 28,864,997 | |
| -1 | -28,864,997 |
Now, we try dividing 28,864,997 by 3:
28,864,997 ÷ 3 = 9,621,665.6667
If the quotient is a whole number, then 3 and 9,621,665.6667 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 | 28,864,997 | |
| -1 | -28,864,997 |
Let's try dividing by 4:
28,864,997 ÷ 4 = 7,216,249.25
If the quotient is a whole number, then 4 and 7,216,249.25 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 | 28,864,997 | |
| -1 | 28,864,997 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 43 | 119 | 301 | 731 | 5,117 | 5,641 | 39,487 | 95,897 | 242,563 | 671,279 | 1,697,941 | 4,123,571 | 28,864,997 |
| -1 | -7 | -17 | -43 | -119 | -301 | -731 | -5,117 | -5,641 | -39,487 | -95,897 | -242,563 | -671,279 | -1,697,941 | -4,123,571 | -28,864,997 |
Here are some more numbers to try:
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