A:
Positive:
1 x 132002455 x 264004917 x 77648585 x 15529797 x 136085485 x 272171601 x 82451649 x 8005
Negative:
-1 x -13200245-5 x -2640049-17 x -776485-85 x -155297-97 x -136085-485 x -27217-1601 x -8245-1649 x -8005
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 13,200,245, 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 | 13,200,245 | |
| -1 | -13,200,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,200,245.
Example:
1 x 13,200,245 = 13,200,245
and
-1 x -13,200,245 = 13,200,245
Notice both answers equal 13,200,245
With that explanation out of the way, let's continue. Next, we take the number 13,200,245 and divide it by 2:
13,200,245 ÷ 2 = 6,600,122.5
If the quotient is a whole number, then 2 and 6,600,122.5 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 | 13,200,245 | |
| -1 | -13,200,245 |
Now, we try dividing 13,200,245 by 3:
13,200,245 ÷ 3 = 4,400,081.6667
If the quotient is a whole number, then 3 and 4,400,081.6667 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 | 13,200,245 | |
| -1 | -13,200,245 |
Let's try dividing by 4:
13,200,245 ÷ 4 = 3,300,061.25
If the quotient is a whole number, then 4 and 3,300,061.25 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 | 13,200,245 | |
| -1 | 13,200,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 97 | 485 | 1,601 | 1,649 | 8,005 | 8,245 | 27,217 | 136,085 | 155,297 | 776,485 | 2,640,049 | 13,200,245 |
| -1 | -5 | -17 | -85 | -97 | -485 | -1,601 | -1,649 | -8,005 | -8,245 | -27,217 | -136,085 | -155,297 | -776,485 | -2,640,049 | -13,200,245 |
Here are some more numbers to try:
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