A:
Positive:
1 x 702022113 x 54001723 x 30522753 x 132457299 x 23479443 x 15847689 x 101891219 x 5759
Negative:
-1 x -7020221-13 x -540017-23 x -305227-53 x -132457-299 x -23479-443 x -15847-689 x -10189-1219 x -5759
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 7,020,221, 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 | 7,020,221 | |
| -1 | -7,020,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,020,221.
Example:
1 x 7,020,221 = 7,020,221
and
-1 x -7,020,221 = 7,020,221
Notice both answers equal 7,020,221
With that explanation out of the way, let's continue. Next, we take the number 7,020,221 and divide it by 2:
7,020,221 ÷ 2 = 3,510,110.5
If the quotient is a whole number, then 2 and 3,510,110.5 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 | 7,020,221 | |
| -1 | -7,020,221 |
Now, we try dividing 7,020,221 by 3:
7,020,221 ÷ 3 = 2,340,073.6667
If the quotient is a whole number, then 3 and 2,340,073.6667 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 | 7,020,221 | |
| -1 | -7,020,221 |
Let's try dividing by 4:
7,020,221 ÷ 4 = 1,755,055.25
If the quotient is a whole number, then 4 and 1,755,055.25 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 | 7,020,221 | |
| -1 | 7,020,221 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 53 | 299 | 443 | 689 | 1,219 | 5,759 | 10,189 | 15,847 | 23,479 | 132,457 | 305,227 | 540,017 | 7,020,221 |
| -1 | -13 | -23 | -53 | -299 | -443 | -689 | -1,219 | -5,759 | -10,189 | -15,847 | -23,479 | -132,457 | -305,227 | -540,017 | -7,020,221 |
Here are some more numbers to try:
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