A:
Positive:
1 x 124212355 x 248424731 x 400685127 x 97805155 x 80137631 x 19685635 x 195613155 x 3937
Negative:
-1 x -12421235-5 x -2484247-31 x -400685-127 x -97805-155 x -80137-631 x -19685-635 x -19561-3155 x -3937
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 12,421,235, 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 | 12,421,235 | |
| -1 | -12,421,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,421,235.
Example:
1 x 12,421,235 = 12,421,235
and
-1 x -12,421,235 = 12,421,235
Notice both answers equal 12,421,235
With that explanation out of the way, let's continue. Next, we take the number 12,421,235 and divide it by 2:
12,421,235 ÷ 2 = 6,210,617.5
If the quotient is a whole number, then 2 and 6,210,617.5 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 | 12,421,235 | |
| -1 | -12,421,235 |
Now, we try dividing 12,421,235 by 3:
12,421,235 ÷ 3 = 4,140,411.6667
If the quotient is a whole number, then 3 and 4,140,411.6667 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 | 12,421,235 | |
| -1 | -12,421,235 |
Let's try dividing by 4:
12,421,235 ÷ 4 = 3,105,308.75
If the quotient is a whole number, then 4 and 3,105,308.75 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 | 12,421,235 | |
| -1 | 12,421,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 127 | 155 | 631 | 635 | 3,155 | 3,937 | 19,561 | 19,685 | 80,137 | 97,805 | 400,685 | 2,484,247 | 12,421,235 |
| -1 | -5 | -31 | -127 | -155 | -631 | -635 | -3,155 | -3,937 | -19,561 | -19,685 | -80,137 | -97,805 | -400,685 | -2,484,247 | -12,421,235 |
Here are some more numbers to try:
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