A:
Positive:
1 x 280422655 x 560845317 x 164954585 x 329909103 x 272255515 x 544511751 x 160153203 x 8755
Negative:
-1 x -28042265-5 x -5608453-17 x -1649545-85 x -329909-103 x -272255-515 x -54451-1751 x -16015-3203 x -8755
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 28,042,265, 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 | 28,042,265 | |
| -1 | -28,042,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,042,265.
Example:
1 x 28,042,265 = 28,042,265
and
-1 x -28,042,265 = 28,042,265
Notice both answers equal 28,042,265
With that explanation out of the way, let's continue. Next, we take the number 28,042,265 and divide it by 2:
28,042,265 ÷ 2 = 14,021,132.5
If the quotient is a whole number, then 2 and 14,021,132.5 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 | 28,042,265 | |
| -1 | -28,042,265 |
Now, we try dividing 28,042,265 by 3:
28,042,265 ÷ 3 = 9,347,421.6667
If the quotient is a whole number, then 3 and 9,347,421.6667 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 | 28,042,265 | |
| -1 | -28,042,265 |
Let's try dividing by 4:
28,042,265 ÷ 4 = 7,010,566.25
If the quotient is a whole number, then 4 and 7,010,566.25 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 | 28,042,265 | |
| -1 | 28,042,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 103 | 515 | 1,751 | 3,203 | 8,755 | 16,015 | 54,451 | 272,255 | 329,909 | 1,649,545 | 5,608,453 | 28,042,265 |
| -1 | -5 | -17 | -85 | -103 | -515 | -1,751 | -3,203 | -8,755 | -16,015 | -54,451 | -272,255 | -329,909 | -1,649,545 | -5,608,453 | -28,042,265 |
Here are some more numbers to try:
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