A:
Positive:
1 x 1242142155 x 2484284341 x 3029615205 x 605923521 x 2384151163 x 1068052605 x 476835815 x 21361
Negative:
-1 x -124214215-5 x -24842843-41 x -3029615-205 x -605923-521 x -238415-1163 x -106805-2605 x -47683-5815 x -21361
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 124,214,215, 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 | 124,214,215 | |
| -1 | -124,214,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 124,214,215.
Example:
1 x 124,214,215 = 124,214,215
and
-1 x -124,214,215 = 124,214,215
Notice both answers equal 124,214,215
With that explanation out of the way, let's continue. Next, we take the number 124,214,215 and divide it by 2:
124,214,215 ÷ 2 = 62,107,107.5
If the quotient is a whole number, then 2 and 62,107,107.5 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 | 124,214,215 | |
| -1 | -124,214,215 |
Now, we try dividing 124,214,215 by 3:
124,214,215 ÷ 3 = 41,404,738.3333
If the quotient is a whole number, then 3 and 41,404,738.3333 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 | 124,214,215 | |
| -1 | -124,214,215 |
Let's try dividing by 4:
124,214,215 ÷ 4 = 31,053,553.75
If the quotient is a whole number, then 4 and 31,053,553.75 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 | 124,214,215 | |
| -1 | 124,214,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 205 | 521 | 1,163 | 2,605 | 5,815 | 21,361 | 47,683 | 106,805 | 238,415 | 605,923 | 3,029,615 | 24,842,843 | 124,214,215 |
| -1 | -5 | -41 | -205 | -521 | -1,163 | -2,605 | -5,815 | -21,361 | -47,683 | -106,805 | -238,415 | -605,923 | -3,029,615 | -24,842,843 | -124,214,215 |
Here are some more numbers to try:
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