A:
Positive:
1 x 22021301913 x 1693946317 x 1295370743 x 5121233221 x 996439559 x 393941731 x 3012499503 x 23173
Negative:
-1 x -220213019-13 x -16939463-17 x -12953707-43 x -5121233-221 x -996439-559 x -393941-731 x -301249-9503 x -23173
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 220,213,019, 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 | 220,213,019 | |
| -1 | -220,213,019 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,213,019.
Example:
1 x 220,213,019 = 220,213,019
and
-1 x -220,213,019 = 220,213,019
Notice both answers equal 220,213,019
With that explanation out of the way, let's continue. Next, we take the number 220,213,019 and divide it by 2:
220,213,019 ÷ 2 = 110,106,509.5
If the quotient is a whole number, then 2 and 110,106,509.5 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 | 220,213,019 | |
| -1 | -220,213,019 |
Now, we try dividing 220,213,019 by 3:
220,213,019 ÷ 3 = 73,404,339.6667
If the quotient is a whole number, then 3 and 73,404,339.6667 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 | 220,213,019 | |
| -1 | -220,213,019 |
Let's try dividing by 4:
220,213,019 ÷ 4 = 55,053,254.75
If the quotient is a whole number, then 4 and 55,053,254.75 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 | 220,213,019 | |
| -1 | 220,213,019 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 43 | 221 | 559 | 731 | 9,503 | 23,173 | 301,249 | 393,941 | 996,439 | 5,121,233 | 12,953,707 | 16,939,463 | 220,213,019 |
| -1 | -13 | -17 | -43 | -221 | -559 | -731 | -9,503 | -23,173 | -301,249 | -393,941 | -996,439 | -5,121,233 | -12,953,707 | -16,939,463 | -220,213,019 |
Here are some more numbers to try:
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