A:
Positive:
1 x 250615455 x 501230961 x 410845127 x 197335305 x 82169635 x 39467647 x 387353235 x 7747
Negative:
-1 x -25061545-5 x -5012309-61 x -410845-127 x -197335-305 x -82169-635 x -39467-647 x -38735-3235 x -7747
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 25,061,545, 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 | 25,061,545 | |
| -1 | -25,061,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,061,545.
Example:
1 x 25,061,545 = 25,061,545
and
-1 x -25,061,545 = 25,061,545
Notice both answers equal 25,061,545
With that explanation out of the way, let's continue. Next, we take the number 25,061,545 and divide it by 2:
25,061,545 ÷ 2 = 12,530,772.5
If the quotient is a whole number, then 2 and 12,530,772.5 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 | 25,061,545 | |
| -1 | -25,061,545 |
Now, we try dividing 25,061,545 by 3:
25,061,545 ÷ 3 = 8,353,848.3333
If the quotient is a whole number, then 3 and 8,353,848.3333 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 | 25,061,545 | |
| -1 | -25,061,545 |
Let's try dividing by 4:
25,061,545 ÷ 4 = 6,265,386.25
If the quotient is a whole number, then 4 and 6,265,386.25 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 | 25,061,545 | |
| -1 | 25,061,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 127 | 305 | 635 | 647 | 3,235 | 7,747 | 38,735 | 39,467 | 82,169 | 197,335 | 410,845 | 5,012,309 | 25,061,545 |
| -1 | -5 | -61 | -127 | -305 | -635 | -647 | -3,235 | -7,747 | -38,735 | -39,467 | -82,169 | -197,335 | -410,845 | -5,012,309 | -25,061,545 |
Here are some more numbers to try:
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