A:
Positive:
1 x 4222010919 x 222211131 x 136193943 x 981863589 x 71681817 x 516771333 x 316731667 x 25327
Negative:
-1 x -42220109-19 x -2222111-31 x -1361939-43 x -981863-589 x -71681-817 x -51677-1333 x -31673-1667 x -25327
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 42,220,109, 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 | 42,220,109 | |
| -1 | -42,220,109 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,220,109.
Example:
1 x 42,220,109 = 42,220,109
and
-1 x -42,220,109 = 42,220,109
Notice both answers equal 42,220,109
With that explanation out of the way, let's continue. Next, we take the number 42,220,109 and divide it by 2:
42,220,109 ÷ 2 = 21,110,054.5
If the quotient is a whole number, then 2 and 21,110,054.5 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 | 42,220,109 | |
| -1 | -42,220,109 |
Now, we try dividing 42,220,109 by 3:
42,220,109 ÷ 3 = 14,073,369.6667
If the quotient is a whole number, then 3 and 14,073,369.6667 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 | 42,220,109 | |
| -1 | -42,220,109 |
Let's try dividing by 4:
42,220,109 ÷ 4 = 10,555,027.25
If the quotient is a whole number, then 4 and 10,555,027.25 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 | 42,220,109 | |
| -1 | 42,220,109 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 43 | 589 | 817 | 1,333 | 1,667 | 25,327 | 31,673 | 51,677 | 71,681 | 981,863 | 1,361,939 | 2,222,111 | 42,220,109 |
| -1 | -19 | -31 | -43 | -589 | -817 | -1,333 | -1,667 | -25,327 | -31,673 | -51,677 | -71,681 | -981,863 | -1,361,939 | -2,222,111 | -42,220,109 |
Here are some more numbers to try:
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