A:
Positive:
1 x 31330002117 x 1842941329 x 1080344943 x 7286047493 x 635497731 x 4285911247 x 25124314779 x 21199
Negative:
-1 x -313300021-17 x -18429413-29 x -10803449-43 x -7286047-493 x -635497-731 x -428591-1247 x -251243-14779 x -21199
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 313,300,021, 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 | 313,300,021 | |
| -1 | -313,300,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 313,300,021.
Example:
1 x 313,300,021 = 313,300,021
and
-1 x -313,300,021 = 313,300,021
Notice both answers equal 313,300,021
With that explanation out of the way, let's continue. Next, we take the number 313,300,021 and divide it by 2:
313,300,021 ÷ 2 = 156,650,010.5
If the quotient is a whole number, then 2 and 156,650,010.5 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 | 313,300,021 | |
| -1 | -313,300,021 |
Now, we try dividing 313,300,021 by 3:
313,300,021 ÷ 3 = 104,433,340.3333
If the quotient is a whole number, then 3 and 104,433,340.3333 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 | 313,300,021 | |
| -1 | -313,300,021 |
Let's try dividing by 4:
313,300,021 ÷ 4 = 78,325,005.25
If the quotient is a whole number, then 4 and 78,325,005.25 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 | 313,300,021 | |
| -1 | 313,300,021 |
If you did it right, you will end up with this table:
| 1 | 17 | 29 | 43 | 493 | 731 | 1,247 | 14,779 | 21,199 | 251,243 | 428,591 | 635,497 | 7,286,047 | 10,803,449 | 18,429,413 | 313,300,021 |
| -1 | -17 | -29 | -43 | -493 | -731 | -1,247 | -14,779 | -21,199 | -251,243 | -428,591 | -635,497 | -7,286,047 | -10,803,449 | -18,429,413 | -313,300,021 |
Here are some more numbers to try:
Try the factor calculator