A:
Positive:
1 x 1323312111 x 120301143 x 307747101 x 131021277 x 47773473 x 279771111 x 119113047 x 4343
Negative:
-1 x -13233121-11 x -1203011-43 x -307747-101 x -131021-277 x -47773-473 x -27977-1111 x -11911-3047 x -4343
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 13,233,121, 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 | 13,233,121 | |
| -1 | -13,233,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,233,121.
Example:
1 x 13,233,121 = 13,233,121
and
-1 x -13,233,121 = 13,233,121
Notice both answers equal 13,233,121
With that explanation out of the way, let's continue. Next, we take the number 13,233,121 and divide it by 2:
13,233,121 ÷ 2 = 6,616,560.5
If the quotient is a whole number, then 2 and 6,616,560.5 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 | 13,233,121 | |
| -1 | -13,233,121 |
Now, we try dividing 13,233,121 by 3:
13,233,121 ÷ 3 = 4,411,040.3333
If the quotient is a whole number, then 3 and 4,411,040.3333 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 | 13,233,121 | |
| -1 | -13,233,121 |
Let's try dividing by 4:
13,233,121 ÷ 4 = 3,308,280.25
If the quotient is a whole number, then 4 and 3,308,280.25 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 | 13,233,121 | |
| -1 | 13,233,121 |
If you did it right, you will end up with this table:
| 1 | 11 | 43 | 101 | 277 | 473 | 1,111 | 3,047 | 4,343 | 11,911 | 27,977 | 47,773 | 131,021 | 307,747 | 1,203,011 | 13,233,121 |
| -1 | -11 | -43 | -101 | -277 | -473 | -1,111 | -3,047 | -4,343 | -11,911 | -27,977 | -47,773 | -131,021 | -307,747 | -1,203,011 | -13,233,121 |
Here are some more numbers to try:
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