A:
Positive:
1 x 1323050311 x 120277313 x 1017731121 x 109343143 x 92521169 x 78287647 x 204491573 x 84111859 x 7117
Negative:
-1 x -13230503-11 x -1202773-13 x -1017731-121 x -109343-143 x -92521-169 x -78287-647 x -20449-1573 x -8411-1859 x -7117
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 13,230,503, 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 | 13,230,503 | |
| -1 | -13,230,503 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,230,503.
Example:
1 x 13,230,503 = 13,230,503
and
-1 x -13,230,503 = 13,230,503
Notice both answers equal 13,230,503
With that explanation out of the way, let's continue. Next, we take the number 13,230,503 and divide it by 2:
13,230,503 ÷ 2 = 6,615,251.5
If the quotient is a whole number, then 2 and 6,615,251.5 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 | 13,230,503 | |
| -1 | -13,230,503 |
Now, we try dividing 13,230,503 by 3:
13,230,503 ÷ 3 = 4,410,167.6667
If the quotient is a whole number, then 3 and 4,410,167.6667 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 | 13,230,503 | |
| -1 | -13,230,503 |
Let's try dividing by 4:
13,230,503 ÷ 4 = 3,307,625.75
If the quotient is a whole number, then 4 and 3,307,625.75 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 | 13,230,503 | |
| -1 | 13,230,503 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 121 | 143 | 169 | 647 | 1,573 | 1,859 | 7,117 | 8,411 | 20,449 | 78,287 | 92,521 | 109,343 | 1,017,731 | 1,202,773 | 13,230,503 |
| -1 | -11 | -13 | -121 | -143 | -169 | -647 | -1,573 | -1,859 | -7,117 | -8,411 | -20,449 | -78,287 | -92,521 | -109,343 | -1,017,731 | -1,202,773 | -13,230,503 |
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