A:
Positive:
1 x 2200211055 x 4400422123 x 956613531 x 7097455115 x 1913227155 x 1419491713 x 3085853565 x 61717
Negative:
-1 x -220021105-5 x -44004221-23 x -9566135-31 x -7097455-115 x -1913227-155 x -1419491-713 x -308585-3565 x -61717
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 220,021,105, 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 | 220,021,105 | |
| -1 | -220,021,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,021,105.
Example:
1 x 220,021,105 = 220,021,105
and
-1 x -220,021,105 = 220,021,105
Notice both answers equal 220,021,105
With that explanation out of the way, let's continue. Next, we take the number 220,021,105 and divide it by 2:
220,021,105 ÷ 2 = 110,010,552.5
If the quotient is a whole number, then 2 and 110,010,552.5 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 | 220,021,105 | |
| -1 | -220,021,105 |
Now, we try dividing 220,021,105 by 3:
220,021,105 ÷ 3 = 73,340,368.3333
If the quotient is a whole number, then 3 and 73,340,368.3333 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 | 220,021,105 | |
| -1 | -220,021,105 |
Let's try dividing by 4:
220,021,105 ÷ 4 = 55,005,276.25
If the quotient is a whole number, then 4 and 55,005,276.25 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 | 220,021,105 | |
| -1 | 220,021,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 31 | 115 | 155 | 713 | 3,565 | 61,717 | 308,585 | 1,419,491 | 1,913,227 | 7,097,455 | 9,566,135 | 44,004,221 | 220,021,105 |
| -1 | -5 | -23 | -31 | -115 | -155 | -713 | -3,565 | -61,717 | -308,585 | -1,419,491 | -1,913,227 | -7,097,455 | -9,566,135 | -44,004,221 | -220,021,105 |
Here are some more numbers to try:
Try the factor calculator