A:
Positive:
1 x 300056055 x 60011217 x 428651535 x 857303269 x 1115451345 x 223091883 x 159353187 x 9415
Negative:
-1 x -30005605-5 x -6001121-7 x -4286515-35 x -857303-269 x -111545-1345 x -22309-1883 x -15935-3187 x -9415
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 30,005,605, 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 | 30,005,605 | |
| -1 | -30,005,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,005,605.
Example:
1 x 30,005,605 = 30,005,605
and
-1 x -30,005,605 = 30,005,605
Notice both answers equal 30,005,605
With that explanation out of the way, let's continue. Next, we take the number 30,005,605 and divide it by 2:
30,005,605 ÷ 2 = 15,002,802.5
If the quotient is a whole number, then 2 and 15,002,802.5 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 | 30,005,605 | |
| -1 | -30,005,605 |
Now, we try dividing 30,005,605 by 3:
30,005,605 ÷ 3 = 10,001,868.3333
If the quotient is a whole number, then 3 and 10,001,868.3333 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 | 30,005,605 | |
| -1 | -30,005,605 |
Let's try dividing by 4:
30,005,605 ÷ 4 = 7,501,401.25
If the quotient is a whole number, then 4 and 7,501,401.25 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 | 30,005,605 | |
| -1 | 30,005,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 269 | 1,345 | 1,883 | 3,187 | 9,415 | 15,935 | 22,309 | 111,545 | 857,303 | 4,286,515 | 6,001,121 | 30,005,605 |
| -1 | -5 | -7 | -35 | -269 | -1,345 | -1,883 | -3,187 | -9,415 | -15,935 | -22,309 | -111,545 | -857,303 | -4,286,515 | -6,001,121 | -30,005,605 |
Here are some more numbers to try:
Try the factor calculator