A:
Positive:
1 x 282507555 x 565015113 x 217313565 x 434627223 x 1266851115 x 253371949 x 144952899 x 9745
Negative:
-1 x -28250755-5 x -5650151-13 x -2173135-65 x -434627-223 x -126685-1115 x -25337-1949 x -14495-2899 x -9745
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 28,250,755, 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 | 28,250,755 | |
| -1 | -28,250,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,250,755.
Example:
1 x 28,250,755 = 28,250,755
and
-1 x -28,250,755 = 28,250,755
Notice both answers equal 28,250,755
With that explanation out of the way, let's continue. Next, we take the number 28,250,755 and divide it by 2:
28,250,755 ÷ 2 = 14,125,377.5
If the quotient is a whole number, then 2 and 14,125,377.5 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 | 28,250,755 | |
| -1 | -28,250,755 |
Now, we try dividing 28,250,755 by 3:
28,250,755 ÷ 3 = 9,416,918.3333
If the quotient is a whole number, then 3 and 9,416,918.3333 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 | 28,250,755 | |
| -1 | -28,250,755 |
Let's try dividing by 4:
28,250,755 ÷ 4 = 7,062,688.75
If the quotient is a whole number, then 4 and 7,062,688.75 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 | 28,250,755 | |
| -1 | 28,250,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 223 | 1,115 | 1,949 | 2,899 | 9,745 | 14,495 | 25,337 | 126,685 | 434,627 | 2,173,135 | 5,650,151 | 28,250,755 |
| -1 | -5 | -13 | -65 | -223 | -1,115 | -1,949 | -2,899 | -9,745 | -14,495 | -25,337 | -126,685 | -434,627 | -2,173,135 | -5,650,151 | -28,250,755 |
Here are some more numbers to try:
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