A:
Positive:
1 x 120547217 x 172210319 x 634459133 x 90637233 x 51737389 x 309891631 x 73912723 x 4427
Negative:
-1 x -12054721-7 x -1722103-19 x -634459-133 x -90637-233 x -51737-389 x -30989-1631 x -7391-2723 x -4427
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 12,054,721, 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 | 12,054,721 | |
| -1 | -12,054,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,054,721.
Example:
1 x 12,054,721 = 12,054,721
and
-1 x -12,054,721 = 12,054,721
Notice both answers equal 12,054,721
With that explanation out of the way, let's continue. Next, we take the number 12,054,721 and divide it by 2:
12,054,721 ÷ 2 = 6,027,360.5
If the quotient is a whole number, then 2 and 6,027,360.5 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 | 12,054,721 | |
| -1 | -12,054,721 |
Now, we try dividing 12,054,721 by 3:
12,054,721 ÷ 3 = 4,018,240.3333
If the quotient is a whole number, then 3 and 4,018,240.3333 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 | 12,054,721 | |
| -1 | -12,054,721 |
Let's try dividing by 4:
12,054,721 ÷ 4 = 3,013,680.25
If the quotient is a whole number, then 4 and 3,013,680.25 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 | 12,054,721 | |
| -1 | 12,054,721 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 133 | 233 | 389 | 1,631 | 2,723 | 4,427 | 7,391 | 30,989 | 51,737 | 90,637 | 634,459 | 1,722,103 | 12,054,721 |
| -1 | -7 | -19 | -133 | -233 | -389 | -1,631 | -2,723 | -4,427 | -7,391 | -30,989 | -51,737 | -90,637 | -634,459 | -1,722,103 | -12,054,721 |
Here are some more numbers to try:
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