A:
Positive:
1 x 2565878913 x 197375367 x 38296789 x 288301331 x 77519871 x 294591157 x 221774303 x 5963
Negative:
-1 x -25658789-13 x -1973753-67 x -382967-89 x -288301-331 x -77519-871 x -29459-1157 x -22177-4303 x -5963
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 25,658,789, 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 | 25,658,789 | |
| -1 | -25,658,789 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,658,789.
Example:
1 x 25,658,789 = 25,658,789
and
-1 x -25,658,789 = 25,658,789
Notice both answers equal 25,658,789
With that explanation out of the way, let's continue. Next, we take the number 25,658,789 and divide it by 2:
25,658,789 ÷ 2 = 12,829,394.5
If the quotient is a whole number, then 2 and 12,829,394.5 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 | 25,658,789 | |
| -1 | -25,658,789 |
Now, we try dividing 25,658,789 by 3:
25,658,789 ÷ 3 = 8,552,929.6667
If the quotient is a whole number, then 3 and 8,552,929.6667 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 | 25,658,789 | |
| -1 | -25,658,789 |
Let's try dividing by 4:
25,658,789 ÷ 4 = 6,414,697.25
If the quotient is a whole number, then 4 and 6,414,697.25 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 | 25,658,789 | |
| -1 | 25,658,789 |
If you did it right, you will end up with this table:
| 1 | 13 | 67 | 89 | 331 | 871 | 1,157 | 4,303 | 5,963 | 22,177 | 29,459 | 77,519 | 288,301 | 382,967 | 1,973,753 | 25,658,789 |
| -1 | -13 | -67 | -89 | -331 | -871 | -1,157 | -4,303 | -5,963 | -22,177 | -29,459 | -77,519 | -288,301 | -382,967 | -1,973,753 | -25,658,789 |
Here are some more numbers to try:
Try the factor calculator