A:
Positive:
1 x 131976117 x 188537349 x 269339109 x 121079343 x 38477353 x 37387763 x 172972471 x 5341
Negative:
-1 x -13197611-7 x -1885373-49 x -269339-109 x -121079-343 x -38477-353 x -37387-763 x -17297-2471 x -5341
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 13,197,611, 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 | 13,197,611 | |
| -1 | -13,197,611 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,197,611.
Example:
1 x 13,197,611 = 13,197,611
and
-1 x -13,197,611 = 13,197,611
Notice both answers equal 13,197,611
With that explanation out of the way, let's continue. Next, we take the number 13,197,611 and divide it by 2:
13,197,611 ÷ 2 = 6,598,805.5
If the quotient is a whole number, then 2 and 6,598,805.5 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 | 13,197,611 | |
| -1 | -13,197,611 |
Now, we try dividing 13,197,611 by 3:
13,197,611 ÷ 3 = 4,399,203.6667
If the quotient is a whole number, then 3 and 4,399,203.6667 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 | 13,197,611 | |
| -1 | -13,197,611 |
Let's try dividing by 4:
13,197,611 ÷ 4 = 3,299,402.75
If the quotient is a whole number, then 4 and 3,299,402.75 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 | 13,197,611 | |
| -1 | 13,197,611 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 109 | 343 | 353 | 763 | 2,471 | 5,341 | 17,297 | 37,387 | 38,477 | 121,079 | 269,339 | 1,885,373 | 13,197,611 |
| -1 | -7 | -49 | -109 | -343 | -353 | -763 | -2,471 | -5,341 | -17,297 | -37,387 | -38,477 | -121,079 | -269,339 | -1,885,373 | -13,197,611 |
Here are some more numbers to try:
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