A:
Positive:
1 x 321301255 x 642602525 x 1285205125 x 257041401 x 80125641 x 501252005 x 160253205 x 10025
Negative:
-1 x -32130125-5 x -6426025-25 x -1285205-125 x -257041-401 x -80125-641 x -50125-2005 x -16025-3205 x -10025
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 32,130,125, 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 | 32,130,125 | |
| -1 | -32,130,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 32,130,125.
Example:
1 x 32,130,125 = 32,130,125
and
-1 x -32,130,125 = 32,130,125
Notice both answers equal 32,130,125
With that explanation out of the way, let's continue. Next, we take the number 32,130,125 and divide it by 2:
32,130,125 ÷ 2 = 16,065,062.5
If the quotient is a whole number, then 2 and 16,065,062.5 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 | 32,130,125 | |
| -1 | -32,130,125 |
Now, we try dividing 32,130,125 by 3:
32,130,125 ÷ 3 = 10,710,041.6667
If the quotient is a whole number, then 3 and 10,710,041.6667 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 | 32,130,125 | |
| -1 | -32,130,125 |
Let's try dividing by 4:
32,130,125 ÷ 4 = 8,032,531.25
If the quotient is a whole number, then 4 and 8,032,531.25 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 | 32,130,125 | |
| -1 | 32,130,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 401 | 641 | 2,005 | 3,205 | 10,025 | 16,025 | 50,125 | 80,125 | 257,041 | 1,285,205 | 6,426,025 | 32,130,125 |
| -1 | -5 | -25 | -125 | -401 | -641 | -2,005 | -3,205 | -10,025 | -16,025 | -50,125 | -80,125 | -257,041 | -1,285,205 | -6,426,025 | -32,130,125 |
Here are some more numbers to try:
Try the factor calculator