A:
Positive:
1 x 303124455 x 606248917 x 178308585 x 356617227 x 1335351135 x 267071571 x 192953859 x 7855
Negative:
-1 x -30312445-5 x -6062489-17 x -1783085-85 x -356617-227 x -133535-1135 x -26707-1571 x -19295-3859 x -7855
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 30,312,445, 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 | 30,312,445 | |
| -1 | -30,312,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,312,445.
Example:
1 x 30,312,445 = 30,312,445
and
-1 x -30,312,445 = 30,312,445
Notice both answers equal 30,312,445
With that explanation out of the way, let's continue. Next, we take the number 30,312,445 and divide it by 2:
30,312,445 ÷ 2 = 15,156,222.5
If the quotient is a whole number, then 2 and 15,156,222.5 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 | 30,312,445 | |
| -1 | -30,312,445 |
Now, we try dividing 30,312,445 by 3:
30,312,445 ÷ 3 = 10,104,148.3333
If the quotient is a whole number, then 3 and 10,104,148.3333 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 | 30,312,445 | |
| -1 | -30,312,445 |
Let's try dividing by 4:
30,312,445 ÷ 4 = 7,578,111.25
If the quotient is a whole number, then 4 and 7,578,111.25 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 | 30,312,445 | |
| -1 | 30,312,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 227 | 1,135 | 1,571 | 3,859 | 7,855 | 19,295 | 26,707 | 133,535 | 356,617 | 1,783,085 | 6,062,489 | 30,312,445 |
| -1 | -5 | -17 | -85 | -227 | -1,135 | -1,571 | -3,859 | -7,855 | -19,295 | -26,707 | -133,535 | -356,617 | -1,783,085 | -6,062,489 | -30,312,445 |
Here are some more numbers to try:
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