A:
Positive:
1 x 1247490123 x 54238729 x 43016959 x 211439317 x 39353667 x 187031357 x 91931711 x 7291
Negative:
-1 x -12474901-23 x -542387-29 x -430169-59 x -211439-317 x -39353-667 x -18703-1357 x -9193-1711 x -7291
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 12,474,901, 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 | 12,474,901 | |
| -1 | -12,474,901 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,474,901.
Example:
1 x 12,474,901 = 12,474,901
and
-1 x -12,474,901 = 12,474,901
Notice both answers equal 12,474,901
With that explanation out of the way, let's continue. Next, we take the number 12,474,901 and divide it by 2:
12,474,901 ÷ 2 = 6,237,450.5
If the quotient is a whole number, then 2 and 6,237,450.5 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 | 12,474,901 | |
| -1 | -12,474,901 |
Now, we try dividing 12,474,901 by 3:
12,474,901 ÷ 3 = 4,158,300.3333
If the quotient is a whole number, then 3 and 4,158,300.3333 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 | 12,474,901 | |
| -1 | -12,474,901 |
Let's try dividing by 4:
12,474,901 ÷ 4 = 3,118,725.25
If the quotient is a whole number, then 4 and 3,118,725.25 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 | 12,474,901 | |
| -1 | 12,474,901 |
If you did it right, you will end up with this table:
| 1 | 23 | 29 | 59 | 317 | 667 | 1,357 | 1,711 | 7,291 | 9,193 | 18,703 | 39,353 | 211,439 | 430,169 | 542,387 | 12,474,901 |
| -1 | -23 | -29 | -59 | -317 | -667 | -1,357 | -1,711 | -7,291 | -9,193 | -18,703 | -39,353 | -211,439 | -430,169 | -542,387 | -12,474,901 |
Here are some more numbers to try:
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