A:
Positive:
1 x 255218955 x 51043797 x 364598535 x 72919749 x 52085573 x 349615245 x 104171365 x 69923511 x 499451427 x 178852555 x 99893577 x 7135
Negative:
-1 x -25521895-5 x -5104379-7 x -3645985-35 x -729197-49 x -520855-73 x -349615-245 x -104171-365 x -69923-511 x -49945-1427 x -17885-2555 x -9989-3577 x -7135
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 25,521,895, 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 | 25,521,895 | |
| -1 | -25,521,895 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,521,895.
Example:
1 x 25,521,895 = 25,521,895
and
-1 x -25,521,895 = 25,521,895
Notice both answers equal 25,521,895
With that explanation out of the way, let's continue. Next, we take the number 25,521,895 and divide it by 2:
25,521,895 ÷ 2 = 12,760,947.5
If the quotient is a whole number, then 2 and 12,760,947.5 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 | 25,521,895 | |
| -1 | -25,521,895 |
Now, we try dividing 25,521,895 by 3:
25,521,895 ÷ 3 = 8,507,298.3333
If the quotient is a whole number, then 3 and 8,507,298.3333 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 | 25,521,895 | |
| -1 | -25,521,895 |
Let's try dividing by 4:
25,521,895 ÷ 4 = 6,380,473.75
If the quotient is a whole number, then 4 and 6,380,473.75 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 | 25,521,895 | |
| -1 | 25,521,895 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 73 | 245 | 365 | 511 | 1,427 | 2,555 | 3,577 | 7,135 | 9,989 | 17,885 | 49,945 | 69,923 | 104,171 | 349,615 | 520,855 | 729,197 | 3,645,985 | 5,104,379 | 25,521,895 |
| -1 | -5 | -7 | -35 | -49 | -73 | -245 | -365 | -511 | -1,427 | -2,555 | -3,577 | -7,135 | -9,989 | -17,885 | -49,945 | -69,923 | -104,171 | -349,615 | -520,855 | -729,197 | -3,645,985 | -5,104,379 | -25,521,895 |
Here are some more numbers to try:
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