A:
Positive:
1 x 134056255 x 268112525 x 53622589 x 150625125 x 107245241 x 55625445 x 30125625 x 214491205 x 111252225 x 6025
Negative:
-1 x -13405625-5 x -2681125-25 x -536225-89 x -150625-125 x -107245-241 x -55625-445 x -30125-625 x -21449-1205 x -11125-2225 x -6025
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 13,405,625, 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 | 13,405,625 | |
| -1 | -13,405,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,405,625.
Example:
1 x 13,405,625 = 13,405,625
and
-1 x -13,405,625 = 13,405,625
Notice both answers equal 13,405,625
With that explanation out of the way, let's continue. Next, we take the number 13,405,625 and divide it by 2:
13,405,625 ÷ 2 = 6,702,812.5
If the quotient is a whole number, then 2 and 6,702,812.5 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 | 13,405,625 | |
| -1 | -13,405,625 |
Now, we try dividing 13,405,625 by 3:
13,405,625 ÷ 3 = 4,468,541.6667
If the quotient is a whole number, then 3 and 4,468,541.6667 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 | 13,405,625 | |
| -1 | -13,405,625 |
Let's try dividing by 4:
13,405,625 ÷ 4 = 3,351,406.25
If the quotient is a whole number, then 4 and 3,351,406.25 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 | 13,405,625 | |
| -1 | 13,405,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 89 | 125 | 241 | 445 | 625 | 1,205 | 2,225 | 6,025 | 11,125 | 21,449 | 30,125 | 55,625 | 107,245 | 150,625 | 536,225 | 2,681,125 | 13,405,625 |
| -1 | -5 | -25 | -89 | -125 | -241 | -445 | -625 | -1,205 | -2,225 | -6,025 | -11,125 | -21,449 | -30,125 | -55,625 | -107,245 | -150,625 | -536,225 | -2,681,125 | -13,405,625 |
Here are some more numbers to try:
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