A:
Positive:
1 x 126057897 x 180082717 x 74151737 x 34069749 x 257261119 x 105931259 x 48671409 x 30821629 x 20041833 x 151331813 x 69532863 x 4403
Negative:
-1 x -12605789-7 x -1800827-17 x -741517-37 x -340697-49 x -257261-119 x -105931-259 x -48671-409 x -30821-629 x -20041-833 x -15133-1813 x -6953-2863 x -4403
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 12,605,789, 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 | 12,605,789 | |
| -1 | -12,605,789 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,605,789.
Example:
1 x 12,605,789 = 12,605,789
and
-1 x -12,605,789 = 12,605,789
Notice both answers equal 12,605,789
With that explanation out of the way, let's continue. Next, we take the number 12,605,789 and divide it by 2:
12,605,789 ÷ 2 = 6,302,894.5
If the quotient is a whole number, then 2 and 6,302,894.5 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 | 12,605,789 | |
| -1 | -12,605,789 |
Now, we try dividing 12,605,789 by 3:
12,605,789 ÷ 3 = 4,201,929.6667
If the quotient is a whole number, then 3 and 4,201,929.6667 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 | 12,605,789 | |
| -1 | -12,605,789 |
Let's try dividing by 4:
12,605,789 ÷ 4 = 3,151,447.25
If the quotient is a whole number, then 4 and 3,151,447.25 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 | 12,605,789 | |
| -1 | 12,605,789 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 37 | 49 | 119 | 259 | 409 | 629 | 833 | 1,813 | 2,863 | 4,403 | 6,953 | 15,133 | 20,041 | 30,821 | 48,671 | 105,931 | 257,261 | 340,697 | 741,517 | 1,800,827 | 12,605,789 |
| -1 | -7 | -17 | -37 | -49 | -119 | -259 | -409 | -629 | -833 | -1,813 | -2,863 | -4,403 | -6,953 | -15,133 | -20,041 | -30,821 | -48,671 | -105,931 | -257,261 | -340,697 | -741,517 | -1,800,827 | -12,605,789 |
Here are some more numbers to try:
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