A:
Positive:
1 x 121773617 x 173962329 x 419909203 x 59987223 x 54607269 x 452691561 x 78011883 x 6467
Negative:
-1 x -12177361-7 x -1739623-29 x -419909-203 x -59987-223 x -54607-269 x -45269-1561 x -7801-1883 x -6467
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 12,177,361, 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 | 12,177,361 | |
| -1 | -12,177,361 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,177,361.
Example:
1 x 12,177,361 = 12,177,361
and
-1 x -12,177,361 = 12,177,361
Notice both answers equal 12,177,361
With that explanation out of the way, let's continue. Next, we take the number 12,177,361 and divide it by 2:
12,177,361 ÷ 2 = 6,088,680.5
If the quotient is a whole number, then 2 and 6,088,680.5 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 | 12,177,361 | |
| -1 | -12,177,361 |
Now, we try dividing 12,177,361 by 3:
12,177,361 ÷ 3 = 4,059,120.3333
If the quotient is a whole number, then 3 and 4,059,120.3333 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 | 12,177,361 | |
| -1 | -12,177,361 |
Let's try dividing by 4:
12,177,361 ÷ 4 = 3,044,340.25
If the quotient is a whole number, then 4 and 3,044,340.25 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 | 12,177,361 | |
| -1 | 12,177,361 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 223 | 269 | 1,561 | 1,883 | 6,467 | 7,801 | 45,269 | 54,607 | 59,987 | 419,909 | 1,739,623 | 12,177,361 |
| -1 | -7 | -29 | -203 | -223 | -269 | -1,561 | -1,883 | -6,467 | -7,801 | -45,269 | -54,607 | -59,987 | -419,909 | -1,739,623 | -12,177,361 |
Here are some more numbers to try:
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