A:
Positive:
1 x 124386297 x 177694779 x 15745183 x 149863271 x 45899553 x 22493581 x 214091897 x 6557
Negative:
-1 x -12438629-7 x -1776947-79 x -157451-83 x -149863-271 x -45899-553 x -22493-581 x -21409-1897 x -6557
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 12,438,629, 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 | 12,438,629 | |
| -1 | -12,438,629 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,438,629.
Example:
1 x 12,438,629 = 12,438,629
and
-1 x -12,438,629 = 12,438,629
Notice both answers equal 12,438,629
With that explanation out of the way, let's continue. Next, we take the number 12,438,629 and divide it by 2:
12,438,629 ÷ 2 = 6,219,314.5
If the quotient is a whole number, then 2 and 6,219,314.5 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 | 12,438,629 | |
| -1 | -12,438,629 |
Now, we try dividing 12,438,629 by 3:
12,438,629 ÷ 3 = 4,146,209.6667
If the quotient is a whole number, then 3 and 4,146,209.6667 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 | 12,438,629 | |
| -1 | -12,438,629 |
Let's try dividing by 4:
12,438,629 ÷ 4 = 3,109,657.25
If the quotient is a whole number, then 4 and 3,109,657.25 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 | 12,438,629 | |
| -1 | 12,438,629 |
If you did it right, you will end up with this table:
| 1 | 7 | 79 | 83 | 271 | 553 | 581 | 1,897 | 6,557 | 21,409 | 22,493 | 45,899 | 149,863 | 157,451 | 1,776,947 | 12,438,629 |
| -1 | -7 | -79 | -83 | -271 | -553 | -581 | -1,897 | -6,557 | -21,409 | -22,493 | -45,899 | -149,863 | -157,451 | -1,776,947 | -12,438,629 |
Here are some more numbers to try:
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