A:
Positive:
1 x 2204015155 x 4408030317 x 1296479585 x 2592959127 x 1735445289 x 762635635 x 3470891201 x 1835151445 x 1525272159 x 1020856005 x 3670310795 x 20417
Negative:
-1 x -220401515-5 x -44080303-17 x -12964795-85 x -2592959-127 x -1735445-289 x -762635-635 x -347089-1201 x -183515-1445 x -152527-2159 x -102085-6005 x -36703-10795 x -20417
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 220,401,515, 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 | 220,401,515 | |
| -1 | -220,401,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,401,515.
Example:
1 x 220,401,515 = 220,401,515
and
-1 x -220,401,515 = 220,401,515
Notice both answers equal 220,401,515
With that explanation out of the way, let's continue. Next, we take the number 220,401,515 and divide it by 2:
220,401,515 ÷ 2 = 110,200,757.5
If the quotient is a whole number, then 2 and 110,200,757.5 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 | 220,401,515 | |
| -1 | -220,401,515 |
Now, we try dividing 220,401,515 by 3:
220,401,515 ÷ 3 = 73,467,171.6667
If the quotient is a whole number, then 3 and 73,467,171.6667 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 | 220,401,515 | |
| -1 | -220,401,515 |
Let's try dividing by 4:
220,401,515 ÷ 4 = 55,100,378.75
If the quotient is a whole number, then 4 and 55,100,378.75 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 | 220,401,515 | |
| -1 | 220,401,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 127 | 289 | 635 | 1,201 | 1,445 | 2,159 | 6,005 | 10,795 | 20,417 | 36,703 | 102,085 | 152,527 | 183,515 | 347,089 | 762,635 | 1,735,445 | 2,592,959 | 12,964,795 | 44,080,303 | 220,401,515 |
| -1 | -5 | -17 | -85 | -127 | -289 | -635 | -1,201 | -1,445 | -2,159 | -6,005 | -10,795 | -20,417 | -36,703 | -102,085 | -152,527 | -183,515 | -347,089 | -762,635 | -1,735,445 | -2,592,959 | -12,964,795 | -44,080,303 | -220,401,515 |
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