A:
Positive:
1 x 280080355 x 560160711 x 254618531 x 90348555 x 509237155 x 180697341 x 821351705 x 16427
Negative:
-1 x -28008035-5 x -5601607-11 x -2546185-31 x -903485-55 x -509237-155 x -180697-341 x -82135-1705 x -16427
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 28,008,035, 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 | 28,008,035 | |
| -1 | -28,008,035 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,008,035.
Example:
1 x 28,008,035 = 28,008,035
and
-1 x -28,008,035 = 28,008,035
Notice both answers equal 28,008,035
With that explanation out of the way, let's continue. Next, we take the number 28,008,035 and divide it by 2:
28,008,035 ÷ 2 = 14,004,017.5
If the quotient is a whole number, then 2 and 14,004,017.5 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 | 28,008,035 | |
| -1 | -28,008,035 |
Now, we try dividing 28,008,035 by 3:
28,008,035 ÷ 3 = 9,336,011.6667
If the quotient is a whole number, then 3 and 9,336,011.6667 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 | 28,008,035 | |
| -1 | -28,008,035 |
Let's try dividing by 4:
28,008,035 ÷ 4 = 7,002,008.75
If the quotient is a whole number, then 4 and 7,002,008.75 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 | 28,008,035 | |
| -1 | 28,008,035 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 341 | 1,705 | 16,427 | 82,135 | 180,697 | 509,237 | 903,485 | 2,546,185 | 5,601,607 | 28,008,035 |
| -1 | -5 | -11 | -31 | -55 | -155 | -341 | -1,705 | -16,427 | -82,135 | -180,697 | -509,237 | -903,485 | -2,546,185 | -5,601,607 | -28,008,035 |
Here are some more numbers to try:
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