A:
Positive:
1 x 22021231331 x 7103623107 x 2058059197 x 1117829337 x 6534493317 x 663896107 x 3605910447 x 21079
Negative:
-1 x -220212313-31 x -7103623-107 x -2058059-197 x -1117829-337 x -653449-3317 x -66389-6107 x -36059-10447 x -21079
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 220,212,313, 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 | 220,212,313 | |
| -1 | -220,212,313 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,212,313.
Example:
1 x 220,212,313 = 220,212,313
and
-1 x -220,212,313 = 220,212,313
Notice both answers equal 220,212,313
With that explanation out of the way, let's continue. Next, we take the number 220,212,313 and divide it by 2:
220,212,313 ÷ 2 = 110,106,156.5
If the quotient is a whole number, then 2 and 110,106,156.5 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 | 220,212,313 | |
| -1 | -220,212,313 |
Now, we try dividing 220,212,313 by 3:
220,212,313 ÷ 3 = 73,404,104.3333
If the quotient is a whole number, then 3 and 73,404,104.3333 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 | 220,212,313 | |
| -1 | -220,212,313 |
Let's try dividing by 4:
220,212,313 ÷ 4 = 55,053,078.25
If the quotient is a whole number, then 4 and 55,053,078.25 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 | 220,212,313 | |
| -1 | 220,212,313 |
If you did it right, you will end up with this table:
| 1 | 31 | 107 | 197 | 337 | 3,317 | 6,107 | 10,447 | 21,079 | 36,059 | 66,389 | 653,449 | 1,117,829 | 2,058,059 | 7,103,623 | 220,212,313 |
| -1 | -31 | -107 | -197 | -337 | -3,317 | -6,107 | -10,447 | -21,079 | -36,059 | -66,389 | -653,449 | -1,117,829 | -2,058,059 | -7,103,623 | -220,212,313 |
Here are some more numbers to try:
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