A:
Positive:
1 x 1236654255 x 2473308513 x 951272525 x 494661729 x 426432565 x 1902545145 x 852865325 x 380509377 x 328025725 x 1705731885 x 656059425 x 13121
Negative:
-1 x -123665425-5 x -24733085-13 x -9512725-25 x -4946617-29 x -4264325-65 x -1902545-145 x -852865-325 x -380509-377 x -328025-725 x -170573-1885 x -65605-9425 x -13121
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 123,665,425, 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 | 123,665,425 | |
| -1 | -123,665,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,665,425.
Example:
1 x 123,665,425 = 123,665,425
and
-1 x -123,665,425 = 123,665,425
Notice both answers equal 123,665,425
With that explanation out of the way, let's continue. Next, we take the number 123,665,425 and divide it by 2:
123,665,425 ÷ 2 = 61,832,712.5
If the quotient is a whole number, then 2 and 61,832,712.5 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 | 123,665,425 | |
| -1 | -123,665,425 |
Now, we try dividing 123,665,425 by 3:
123,665,425 ÷ 3 = 41,221,808.3333
If the quotient is a whole number, then 3 and 41,221,808.3333 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 | 123,665,425 | |
| -1 | -123,665,425 |
Let's try dividing by 4:
123,665,425 ÷ 4 = 30,916,356.25
If the quotient is a whole number, then 4 and 30,916,356.25 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 | 123,665,425 | |
| -1 | 123,665,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 29 | 65 | 145 | 325 | 377 | 725 | 1,885 | 9,425 | 13,121 | 65,605 | 170,573 | 328,025 | 380,509 | 852,865 | 1,902,545 | 4,264,325 | 4,946,617 | 9,512,725 | 24,733,085 | 123,665,425 |
| -1 | -5 | -13 | -25 | -29 | -65 | -145 | -325 | -377 | -725 | -1,885 | -9,425 | -13,121 | -65,605 | -170,573 | -328,025 | -380,509 | -852,865 | -1,902,545 | -4,264,325 | -4,946,617 | -9,512,725 | -24,733,085 | -123,665,425 |
Here are some more numbers to try:
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