A:
Positive:
1 x 305021155 x 61004237 x 435744535 x 87148959 x 516985295 x 103397413 x 738552065 x 14771
Negative:
-1 x -30502115-5 x -6100423-7 x -4357445-35 x -871489-59 x -516985-295 x -103397-413 x -73855-2065 x -14771
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 30,502,115, 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 | 30,502,115 | |
| -1 | -30,502,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,502,115.
Example:
1 x 30,502,115 = 30,502,115
and
-1 x -30,502,115 = 30,502,115
Notice both answers equal 30,502,115
With that explanation out of the way, let's continue. Next, we take the number 30,502,115 and divide it by 2:
30,502,115 ÷ 2 = 15,251,057.5
If the quotient is a whole number, then 2 and 15,251,057.5 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 | 30,502,115 | |
| -1 | -30,502,115 |
Now, we try dividing 30,502,115 by 3:
30,502,115 ÷ 3 = 10,167,371.6667
If the quotient is a whole number, then 3 and 10,167,371.6667 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 | 30,502,115 | |
| -1 | -30,502,115 |
Let's try dividing by 4:
30,502,115 ÷ 4 = 7,625,528.75
If the quotient is a whole number, then 4 and 7,625,528.75 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 | 30,502,115 | |
| -1 | 30,502,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 59 | 295 | 413 | 2,065 | 14,771 | 73,855 | 103,397 | 516,985 | 871,489 | 4,357,445 | 6,100,423 | 30,502,115 |
| -1 | -5 | -7 | -35 | -59 | -295 | -413 | -2,065 | -14,771 | -73,855 | -103,397 | -516,985 | -871,489 | -4,357,445 | -6,100,423 | -30,502,115 |
Here are some more numbers to try:
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