A:
Positive:
1 x 131301255 x 262602523 x 57087525 x 525205115 x 114175125 x 105041575 x 228352875 x 4567
Negative:
-1 x -13130125-5 x -2626025-23 x -570875-25 x -525205-115 x -114175-125 x -105041-575 x -22835-2875 x -4567
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 13,130,125, 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 | 13,130,125 | |
| -1 | -13,130,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,130,125.
Example:
1 x 13,130,125 = 13,130,125
and
-1 x -13,130,125 = 13,130,125
Notice both answers equal 13,130,125
With that explanation out of the way, let's continue. Next, we take the number 13,130,125 and divide it by 2:
13,130,125 ÷ 2 = 6,565,062.5
If the quotient is a whole number, then 2 and 6,565,062.5 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 | 13,130,125 | |
| -1 | -13,130,125 |
Now, we try dividing 13,130,125 by 3:
13,130,125 ÷ 3 = 4,376,708.3333
If the quotient is a whole number, then 3 and 4,376,708.3333 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 | 13,130,125 | |
| -1 | -13,130,125 |
Let's try dividing by 4:
13,130,125 ÷ 4 = 3,282,531.25
If the quotient is a whole number, then 4 and 3,282,531.25 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 | 13,130,125 | |
| -1 | 13,130,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 25 | 115 | 125 | 575 | 2,875 | 4,567 | 22,835 | 105,041 | 114,175 | 525,205 | 570,875 | 2,626,025 | 13,130,125 |
| -1 | -5 | -23 | -25 | -115 | -125 | -575 | -2,875 | -4,567 | -22,835 | -105,041 | -114,175 | -525,205 | -570,875 | -2,626,025 | -13,130,125 |
Here are some more numbers to try:
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