A:
Positive:
1 x 31304736111 x 28458851149 x 2100989389 x 804749491 x 6375711639 x 1909994279 x 731595401 x 57961
Negative:
-1 x -313047361-11 x -28458851-149 x -2100989-389 x -804749-491 x -637571-1639 x -190999-4279 x -73159-5401 x -57961
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 313,047,361, 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 | 313,047,361 | |
| -1 | -313,047,361 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 313,047,361.
Example:
1 x 313,047,361 = 313,047,361
and
-1 x -313,047,361 = 313,047,361
Notice both answers equal 313,047,361
With that explanation out of the way, let's continue. Next, we take the number 313,047,361 and divide it by 2:
313,047,361 ÷ 2 = 156,523,680.5
If the quotient is a whole number, then 2 and 156,523,680.5 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 | 313,047,361 | |
| -1 | -313,047,361 |
Now, we try dividing 313,047,361 by 3:
313,047,361 ÷ 3 = 104,349,120.3333
If the quotient is a whole number, then 3 and 104,349,120.3333 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 | 313,047,361 | |
| -1 | -313,047,361 |
Let's try dividing by 4:
313,047,361 ÷ 4 = 78,261,840.25
If the quotient is a whole number, then 4 and 78,261,840.25 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 | 313,047,361 | |
| -1 | 313,047,361 |
If you did it right, you will end up with this table:
| 1 | 11 | 149 | 389 | 491 | 1,639 | 4,279 | 5,401 | 57,961 | 73,159 | 190,999 | 637,571 | 804,749 | 2,100,989 | 28,458,851 | 313,047,361 |
| -1 | -11 | -149 | -389 | -491 | -1,639 | -4,279 | -5,401 | -57,961 | -73,159 | -190,999 | -637,571 | -804,749 | -2,100,989 | -28,458,851 | -313,047,361 |
Here are some more numbers to try:
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