A:
Positive:
1 x 1217949711 x 110722717 x 71644131 x 392887121 x 100657187 x 65131191 x 63767341 x 35717527 x 231112057 x 59212101 x 57973247 x 3751
Negative:
-1 x -12179497-11 x -1107227-17 x -716441-31 x -392887-121 x -100657-187 x -65131-191 x -63767-341 x -35717-527 x -23111-2057 x -5921-2101 x -5797-3247 x -3751
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 12,179,497, 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 | 12,179,497 | |
| -1 | -12,179,497 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,179,497.
Example:
1 x 12,179,497 = 12,179,497
and
-1 x -12,179,497 = 12,179,497
Notice both answers equal 12,179,497
With that explanation out of the way, let's continue. Next, we take the number 12,179,497 and divide it by 2:
12,179,497 ÷ 2 = 6,089,748.5
If the quotient is a whole number, then 2 and 6,089,748.5 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 | 12,179,497 | |
| -1 | -12,179,497 |
Now, we try dividing 12,179,497 by 3:
12,179,497 ÷ 3 = 4,059,832.3333
If the quotient is a whole number, then 3 and 4,059,832.3333 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 | 12,179,497 | |
| -1 | -12,179,497 |
Let's try dividing by 4:
12,179,497 ÷ 4 = 3,044,874.25
If the quotient is a whole number, then 4 and 3,044,874.25 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 | 12,179,497 | |
| -1 | 12,179,497 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 31 | 121 | 187 | 191 | 341 | 527 | 2,057 | 2,101 | 3,247 | 3,751 | 5,797 | 5,921 | 23,111 | 35,717 | 63,767 | 65,131 | 100,657 | 392,887 | 716,441 | 1,107,227 | 12,179,497 |
| -1 | -11 | -17 | -31 | -121 | -187 | -191 | -341 | -527 | -2,057 | -2,101 | -3,247 | -3,751 | -5,797 | -5,921 | -23,111 | -35,717 | -63,767 | -65,131 | -100,657 | -392,887 | -716,441 | -1,107,227 | -12,179,497 |
Here are some more numbers to try:
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