A:
Positive:
1 x 3615031217 x 5164330323 x 1571752731 x 11661391161 x 2245361217 x 1665913713 x 5070174991 x 72431
Negative:
-1 x -361503121-7 x -51643303-23 x -15717527-31 x -11661391-161 x -2245361-217 x -1665913-713 x -507017-4991 x -72431
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 361,503,121, 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 | 361,503,121 | |
| -1 | -361,503,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 361,503,121.
Example:
1 x 361,503,121 = 361,503,121
and
-1 x -361,503,121 = 361,503,121
Notice both answers equal 361,503,121
With that explanation out of the way, let's continue. Next, we take the number 361,503,121 and divide it by 2:
361,503,121 ÷ 2 = 180,751,560.5
If the quotient is a whole number, then 2 and 180,751,560.5 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 | 361,503,121 | |
| -1 | -361,503,121 |
Now, we try dividing 361,503,121 by 3:
361,503,121 ÷ 3 = 120,501,040.3333
If the quotient is a whole number, then 3 and 120,501,040.3333 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 | 361,503,121 | |
| -1 | -361,503,121 |
Let's try dividing by 4:
361,503,121 ÷ 4 = 90,375,780.25
If the quotient is a whole number, then 4 and 90,375,780.25 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 | 361,503,121 | |
| -1 | 361,503,121 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 31 | 161 | 217 | 713 | 4,991 | 72,431 | 507,017 | 1,665,913 | 2,245,361 | 11,661,391 | 15,717,527 | 51,643,303 | 361,503,121 |
| -1 | -7 | -23 | -31 | -161 | -217 | -713 | -4,991 | -72,431 | -507,017 | -1,665,913 | -2,245,361 | -11,661,391 | -15,717,527 | -51,643,303 | -361,503,121 |
Here are some more numbers to try:
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