A:
Positive:
1 x 301374855 x 60274977 x 430535535 x 861071149 x 202265745 x 404531043 x 288955215 x 5779
Negative:
-1 x -30137485-5 x -6027497-7 x -4305355-35 x -861071-149 x -202265-745 x -40453-1043 x -28895-5215 x -5779
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 30,137,485, 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 | 30,137,485 | |
| -1 | -30,137,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,137,485.
Example:
1 x 30,137,485 = 30,137,485
and
-1 x -30,137,485 = 30,137,485
Notice both answers equal 30,137,485
With that explanation out of the way, let's continue. Next, we take the number 30,137,485 and divide it by 2:
30,137,485 ÷ 2 = 15,068,742.5
If the quotient is a whole number, then 2 and 15,068,742.5 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 | 30,137,485 | |
| -1 | -30,137,485 |
Now, we try dividing 30,137,485 by 3:
30,137,485 ÷ 3 = 10,045,828.3333
If the quotient is a whole number, then 3 and 10,045,828.3333 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 | 30,137,485 | |
| -1 | -30,137,485 |
Let's try dividing by 4:
30,137,485 ÷ 4 = 7,534,371.25
If the quotient is a whole number, then 4 and 7,534,371.25 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 | 30,137,485 | |
| -1 | 30,137,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 149 | 745 | 1,043 | 5,215 | 5,779 | 28,895 | 40,453 | 202,265 | 861,071 | 4,305,355 | 6,027,497 | 30,137,485 |
| -1 | -5 | -7 | -35 | -149 | -745 | -1,043 | -5,215 | -5,779 | -28,895 | -40,453 | -202,265 | -861,071 | -4,305,355 | -6,027,497 | -30,137,485 |
Here are some more numbers to try:
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