A:
Positive:
1 x 2203445055 x 4406890161 x 3612205305 x 722441449 x 4907451609 x 1369452245 x 981498045 x 27389
Negative:
-1 x -220344505-5 x -44068901-61 x -3612205-305 x -722441-449 x -490745-1609 x -136945-2245 x -98149-8045 x -27389
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 220,344,505, 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 | 220,344,505 | |
| -1 | -220,344,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,344,505.
Example:
1 x 220,344,505 = 220,344,505
and
-1 x -220,344,505 = 220,344,505
Notice both answers equal 220,344,505
With that explanation out of the way, let's continue. Next, we take the number 220,344,505 and divide it by 2:
220,344,505 ÷ 2 = 110,172,252.5
If the quotient is a whole number, then 2 and 110,172,252.5 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 | 220,344,505 | |
| -1 | -220,344,505 |
Now, we try dividing 220,344,505 by 3:
220,344,505 ÷ 3 = 73,448,168.3333
If the quotient is a whole number, then 3 and 73,448,168.3333 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 | 220,344,505 | |
| -1 | -220,344,505 |
Let's try dividing by 4:
220,344,505 ÷ 4 = 55,086,126.25
If the quotient is a whole number, then 4 and 55,086,126.25 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 | 220,344,505 | |
| -1 | 220,344,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 305 | 449 | 1,609 | 2,245 | 8,045 | 27,389 | 98,149 | 136,945 | 490,745 | 722,441 | 3,612,205 | 44,068,901 | 220,344,505 |
| -1 | -5 | -61 | -305 | -449 | -1,609 | -2,245 | -8,045 | -27,389 | -98,149 | -136,945 | -490,745 | -722,441 | -3,612,205 | -44,068,901 | -220,344,505 |
Here are some more numbers to try:
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