A:
Positive:
1 x 241204155 x 482408311 x 219276555 x 438553113 x 213455565 x 426911243 x 194053881 x 6215
Negative:
-1 x -24120415-5 x -4824083-11 x -2192765-55 x -438553-113 x -213455-565 x -42691-1243 x -19405-3881 x -6215
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 24,120,415, 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 | 24,120,415 | |
| -1 | -24,120,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 24,120,415.
Example:
1 x 24,120,415 = 24,120,415
and
-1 x -24,120,415 = 24,120,415
Notice both answers equal 24,120,415
With that explanation out of the way, let's continue. Next, we take the number 24,120,415 and divide it by 2:
24,120,415 ÷ 2 = 12,060,207.5
If the quotient is a whole number, then 2 and 12,060,207.5 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 | 24,120,415 | |
| -1 | -24,120,415 |
Now, we try dividing 24,120,415 by 3:
24,120,415 ÷ 3 = 8,040,138.3333
If the quotient is a whole number, then 3 and 8,040,138.3333 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 | 24,120,415 | |
| -1 | -24,120,415 |
Let's try dividing by 4:
24,120,415 ÷ 4 = 6,030,103.75
If the quotient is a whole number, then 4 and 6,030,103.75 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 | 24,120,415 | |
| -1 | 24,120,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 113 | 565 | 1,243 | 3,881 | 6,215 | 19,405 | 42,691 | 213,455 | 438,553 | 2,192,765 | 4,824,083 | 24,120,415 |
| -1 | -5 | -11 | -55 | -113 | -565 | -1,243 | -3,881 | -6,215 | -19,405 | -42,691 | -213,455 | -438,553 | -2,192,765 | -4,824,083 | -24,120,415 |
Here are some more numbers to try:
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