A:
Positive:
1 x 3061500123 x 133108747 x 651383127 x 241063223 x 1372871081 x 283212921 x 104815129 x 5969
Negative:
-1 x -30615001-23 x -1331087-47 x -651383-127 x -241063-223 x -137287-1081 x -28321-2921 x -10481-5129 x -5969
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 30,615,001, 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 | 30,615,001 | |
| -1 | -30,615,001 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,615,001.
Example:
1 x 30,615,001 = 30,615,001
and
-1 x -30,615,001 = 30,615,001
Notice both answers equal 30,615,001
With that explanation out of the way, let's continue. Next, we take the number 30,615,001 and divide it by 2:
30,615,001 ÷ 2 = 15,307,500.5
If the quotient is a whole number, then 2 and 15,307,500.5 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 | 30,615,001 | |
| -1 | -30,615,001 |
Now, we try dividing 30,615,001 by 3:
30,615,001 ÷ 3 = 10,205,000.3333
If the quotient is a whole number, then 3 and 10,205,000.3333 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 | 30,615,001 | |
| -1 | -30,615,001 |
Let's try dividing by 4:
30,615,001 ÷ 4 = 7,653,750.25
If the quotient is a whole number, then 4 and 7,653,750.25 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 | 30,615,001 | |
| -1 | 30,615,001 |
If you did it right, you will end up with this table:
| 1 | 23 | 47 | 127 | 223 | 1,081 | 2,921 | 5,129 | 5,969 | 10,481 | 28,321 | 137,287 | 241,063 | 651,383 | 1,331,087 | 30,615,001 |
| -1 | -23 | -47 | -127 | -223 | -1,081 | -2,921 | -5,129 | -5,969 | -10,481 | -28,321 | -137,287 | -241,063 | -651,383 | -1,331,087 | -30,615,001 |
Here are some more numbers to try:
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