A:
Positive:
1 x 1262192931 x 40715959 x 21393167 x 188387103 x 1225431829 x 69012077 x 60773193 x 3953
Negative:
-1 x -12621929-31 x -407159-59 x -213931-67 x -188387-103 x -122543-1829 x -6901-2077 x -6077-3193 x -3953
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 12,621,929, 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 | 12,621,929 | |
| -1 | -12,621,929 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,621,929.
Example:
1 x 12,621,929 = 12,621,929
and
-1 x -12,621,929 = 12,621,929
Notice both answers equal 12,621,929
With that explanation out of the way, let's continue. Next, we take the number 12,621,929 and divide it by 2:
12,621,929 ÷ 2 = 6,310,964.5
If the quotient is a whole number, then 2 and 6,310,964.5 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 | 12,621,929 | |
| -1 | -12,621,929 |
Now, we try dividing 12,621,929 by 3:
12,621,929 ÷ 3 = 4,207,309.6667
If the quotient is a whole number, then 3 and 4,207,309.6667 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 | 12,621,929 | |
| -1 | -12,621,929 |
Let's try dividing by 4:
12,621,929 ÷ 4 = 3,155,482.25
If the quotient is a whole number, then 4 and 3,155,482.25 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 | 12,621,929 | |
| -1 | 12,621,929 |
If you did it right, you will end up with this table:
| 1 | 31 | 59 | 67 | 103 | 1,829 | 2,077 | 3,193 | 3,953 | 6,077 | 6,901 | 122,543 | 188,387 | 213,931 | 407,159 | 12,621,929 |
| -1 | -31 | -59 | -67 | -103 | -1,829 | -2,077 | -3,193 | -3,953 | -6,077 | -6,901 | -122,543 | -188,387 | -213,931 | -407,159 | -12,621,929 |
Here are some more numbers to try:
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