A:
Positive:
1 x 282031255 x 564062519 x 148437525 x 112812595 x 296875125 x 225625361 x 78125475 x 59375625 x 451251805 x 156252375 x 118753125 x 9025
Negative:
-1 x -28203125-5 x -5640625-19 x -1484375-25 x -1128125-95 x -296875-125 x -225625-361 x -78125-475 x -59375-625 x -45125-1805 x -15625-2375 x -11875-3125 x -9025
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 28,203,125, 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 | 28,203,125 | |
| -1 | -28,203,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,203,125.
Example:
1 x 28,203,125 = 28,203,125
and
-1 x -28,203,125 = 28,203,125
Notice both answers equal 28,203,125
With that explanation out of the way, let's continue. Next, we take the number 28,203,125 and divide it by 2:
28,203,125 ÷ 2 = 14,101,562.5
If the quotient is a whole number, then 2 and 14,101,562.5 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 | 28,203,125 | |
| -1 | -28,203,125 |
Now, we try dividing 28,203,125 by 3:
28,203,125 ÷ 3 = 9,401,041.6667
If the quotient is a whole number, then 3 and 9,401,041.6667 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 | 28,203,125 | |
| -1 | -28,203,125 |
Let's try dividing by 4:
28,203,125 ÷ 4 = 7,050,781.25
If the quotient is a whole number, then 4 and 7,050,781.25 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 | 28,203,125 | |
| -1 | 28,203,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 125 | 361 | 475 | 625 | 1,805 | 2,375 | 3,125 | 9,025 | 11,875 | 15,625 | 45,125 | 59,375 | 78,125 | 225,625 | 296,875 | 1,128,125 | 1,484,375 | 5,640,625 | 28,203,125 |
| -1 | -5 | -19 | -25 | -95 | -125 | -361 | -475 | -625 | -1,805 | -2,375 | -3,125 | -9,025 | -11,875 | -15,625 | -45,125 | -59,375 | -78,125 | -225,625 | -296,875 | -1,128,125 | -1,484,375 | -5,640,625 | -28,203,125 |
Here are some more numbers to try:
Try the factor calculator