A:
Positive:
1 x 250402255 x 50080457 x 357717525 x 100160935 x 71543549 x 511025175 x 143087245 x 1022051225 x 20441
Negative:
-1 x -25040225-5 x -5008045-7 x -3577175-25 x -1001609-35 x -715435-49 x -511025-175 x -143087-245 x -102205-1225 x -20441
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 25,040,225, 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 | 25,040,225 | |
| -1 | -25,040,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,040,225.
Example:
1 x 25,040,225 = 25,040,225
and
-1 x -25,040,225 = 25,040,225
Notice both answers equal 25,040,225
With that explanation out of the way, let's continue. Next, we take the number 25,040,225 and divide it by 2:
25,040,225 ÷ 2 = 12,520,112.5
If the quotient is a whole number, then 2 and 12,520,112.5 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 | 25,040,225 | |
| -1 | -25,040,225 |
Now, we try dividing 25,040,225 by 3:
25,040,225 ÷ 3 = 8,346,741.6667
If the quotient is a whole number, then 3 and 8,346,741.6667 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 | 25,040,225 | |
| -1 | -25,040,225 |
Let's try dividing by 4:
25,040,225 ÷ 4 = 6,260,056.25
If the quotient is a whole number, then 4 and 6,260,056.25 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 | 25,040,225 | |
| -1 | 25,040,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 49 | 175 | 245 | 1,225 | 20,441 | 102,205 | 143,087 | 511,025 | 715,435 | 1,001,609 | 3,577,175 | 5,008,045 | 25,040,225 |
| -1 | -5 | -7 | -25 | -35 | -49 | -175 | -245 | -1,225 | -20,441 | -102,205 | -143,087 | -511,025 | -715,435 | -1,001,609 | -3,577,175 | -5,008,045 | -25,040,225 |
Here are some more numbers to try:
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