A:
Positive:
1 x 12208077 x 17440119 x 6425367 x 18221133 x 9179137 x 8911469 x 2603959 x 1273
Negative:
-1 x -1220807-7 x -174401-19 x -64253-67 x -18221-133 x -9179-137 x -8911-469 x -2603-959 x -1273
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 1,220,807, 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 | 1,220,807 | |
| -1 | -1,220,807 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,220,807.
Example:
1 x 1,220,807 = 1,220,807
and
-1 x -1,220,807 = 1,220,807
Notice both answers equal 1,220,807
With that explanation out of the way, let's continue. Next, we take the number 1,220,807 and divide it by 2:
1,220,807 ÷ 2 = 610,403.5
If the quotient is a whole number, then 2 and 610,403.5 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 | 1,220,807 | |
| -1 | -1,220,807 |
Now, we try dividing 1,220,807 by 3:
1,220,807 ÷ 3 = 406,935.6667
If the quotient is a whole number, then 3 and 406,935.6667 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 | 1,220,807 | |
| -1 | -1,220,807 |
Let's try dividing by 4:
1,220,807 ÷ 4 = 305,201.75
If the quotient is a whole number, then 4 and 305,201.75 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 | 1,220,807 | |
| -1 | 1,220,807 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 67 | 133 | 137 | 469 | 959 | 1,273 | 2,603 | 8,911 | 9,179 | 18,221 | 64,253 | 174,401 | 1,220,807 |
| -1 | -7 | -19 | -67 | -133 | -137 | -469 | -959 | -1,273 | -2,603 | -8,911 | -9,179 | -18,221 | -64,253 | -174,401 | -1,220,807 |
Here are some more numbers to try:
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