A:
Positive:
1 x 1204503119 x 63394923 x 52369743 x 280117437 x 27563641 x 18791817 x 14743989 x 12179
Negative:
-1 x -12045031-19 x -633949-23 x -523697-43 x -280117-437 x -27563-641 x -18791-817 x -14743-989 x -12179
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 12,045,031, 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 | 12,045,031 | |
| -1 | -12,045,031 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,045,031.
Example:
1 x 12,045,031 = 12,045,031
and
-1 x -12,045,031 = 12,045,031
Notice both answers equal 12,045,031
With that explanation out of the way, let's continue. Next, we take the number 12,045,031 and divide it by 2:
12,045,031 ÷ 2 = 6,022,515.5
If the quotient is a whole number, then 2 and 6,022,515.5 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 | 12,045,031 | |
| -1 | -12,045,031 |
Now, we try dividing 12,045,031 by 3:
12,045,031 ÷ 3 = 4,015,010.3333
If the quotient is a whole number, then 3 and 4,015,010.3333 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 | 12,045,031 | |
| -1 | -12,045,031 |
Let's try dividing by 4:
12,045,031 ÷ 4 = 3,011,257.75
If the quotient is a whole number, then 4 and 3,011,257.75 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 | 12,045,031 | |
| -1 | 12,045,031 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 43 | 437 | 641 | 817 | 989 | 12,179 | 14,743 | 18,791 | 27,563 | 280,117 | 523,697 | 633,949 | 12,045,031 |
| -1 | -19 | -23 | -43 | -437 | -641 | -817 | -989 | -12,179 | -14,743 | -18,791 | -27,563 | -280,117 | -523,697 | -633,949 | -12,045,031 |
Here are some more numbers to try:
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