A:
Positive:
1 x 302311455 x 60462297 x 431873535 x 86374741 x 737345205 x 147469287 x 1053351435 x 21067
Negative:
-1 x -30231145-5 x -6046229-7 x -4318735-35 x -863747-41 x -737345-205 x -147469-287 x -105335-1435 x -21067
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 30,231,145, 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 | 30,231,145 | |
| -1 | -30,231,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,231,145.
Example:
1 x 30,231,145 = 30,231,145
and
-1 x -30,231,145 = 30,231,145
Notice both answers equal 30,231,145
With that explanation out of the way, let's continue. Next, we take the number 30,231,145 and divide it by 2:
30,231,145 ÷ 2 = 15,115,572.5
If the quotient is a whole number, then 2 and 15,115,572.5 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 | 30,231,145 | |
| -1 | -30,231,145 |
Now, we try dividing 30,231,145 by 3:
30,231,145 ÷ 3 = 10,077,048.3333
If the quotient is a whole number, then 3 and 10,077,048.3333 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 | 30,231,145 | |
| -1 | -30,231,145 |
Let's try dividing by 4:
30,231,145 ÷ 4 = 7,557,786.25
If the quotient is a whole number, then 4 and 7,557,786.25 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 | 30,231,145 | |
| -1 | 30,231,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 41 | 205 | 287 | 1,435 | 21,067 | 105,335 | 147,469 | 737,345 | 863,747 | 4,318,735 | 6,046,229 | 30,231,145 |
| -1 | -5 | -7 | -35 | -41 | -205 | -287 | -1,435 | -21,067 | -105,335 | -147,469 | -737,345 | -863,747 | -4,318,735 | -6,046,229 | -30,231,145 |
Here are some more numbers to try:
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