A:
Positive:
1 x 124406455 x 24881297 x 177723535 x 35544761 x 203945305 x 40789427 x 291352135 x 5827
Negative:
-1 x -12440645-5 x -2488129-7 x -1777235-35 x -355447-61 x -203945-305 x -40789-427 x -29135-2135 x -5827
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 12,440,645, 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 | 12,440,645 | |
| -1 | -12,440,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,440,645.
Example:
1 x 12,440,645 = 12,440,645
and
-1 x -12,440,645 = 12,440,645
Notice both answers equal 12,440,645
With that explanation out of the way, let's continue. Next, we take the number 12,440,645 and divide it by 2:
12,440,645 ÷ 2 = 6,220,322.5
If the quotient is a whole number, then 2 and 6,220,322.5 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 | 12,440,645 | |
| -1 | -12,440,645 |
Now, we try dividing 12,440,645 by 3:
12,440,645 ÷ 3 = 4,146,881.6667
If the quotient is a whole number, then 3 and 4,146,881.6667 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 | 12,440,645 | |
| -1 | -12,440,645 |
Let's try dividing by 4:
12,440,645 ÷ 4 = 3,110,161.25
If the quotient is a whole number, then 4 and 3,110,161.25 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 | 12,440,645 | |
| -1 | 12,440,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 61 | 305 | 427 | 2,135 | 5,827 | 29,135 | 40,789 | 203,945 | 355,447 | 1,777,235 | 2,488,129 | 12,440,645 |
| -1 | -5 | -7 | -35 | -61 | -305 | -427 | -2,135 | -5,827 | -29,135 | -40,789 | -203,945 | -355,447 | -1,777,235 | -2,488,129 | -12,440,645 |
Here are some more numbers to try:
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