A:
Positive:
1 x 128604855 x 257209711 x 116913529 x 44346555 x 233827121 x 106285145 x 88693319 x 40315605 x 21257733 x 175451595 x 80633509 x 3665
Negative:
-1 x -12860485-5 x -2572097-11 x -1169135-29 x -443465-55 x -233827-121 x -106285-145 x -88693-319 x -40315-605 x -21257-733 x -17545-1595 x -8063-3509 x -3665
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 12,860,485, 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 | 12,860,485 | |
| -1 | -12,860,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,860,485.
Example:
1 x 12,860,485 = 12,860,485
and
-1 x -12,860,485 = 12,860,485
Notice both answers equal 12,860,485
With that explanation out of the way, let's continue. Next, we take the number 12,860,485 and divide it by 2:
12,860,485 ÷ 2 = 6,430,242.5
If the quotient is a whole number, then 2 and 6,430,242.5 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 | 12,860,485 | |
| -1 | -12,860,485 |
Now, we try dividing 12,860,485 by 3:
12,860,485 ÷ 3 = 4,286,828.3333
If the quotient is a whole number, then 3 and 4,286,828.3333 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 | 12,860,485 | |
| -1 | -12,860,485 |
Let's try dividing by 4:
12,860,485 ÷ 4 = 3,215,121.25
If the quotient is a whole number, then 4 and 3,215,121.25 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 | 12,860,485 | |
| -1 | 12,860,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 29 | 55 | 121 | 145 | 319 | 605 | 733 | 1,595 | 3,509 | 3,665 | 8,063 | 17,545 | 21,257 | 40,315 | 88,693 | 106,285 | 233,827 | 443,465 | 1,169,135 | 2,572,097 | 12,860,485 |
| -1 | -5 | -11 | -29 | -55 | -121 | -145 | -319 | -605 | -733 | -1,595 | -3,509 | -3,665 | -8,063 | -17,545 | -21,257 | -40,315 | -88,693 | -106,285 | -233,827 | -443,465 | -1,169,135 | -2,572,097 | -12,860,485 |
Here are some more numbers to try:
Try the factor calculator