A:
Positive:
1 x 18202037 x 26002911 x 16547349 x 3714777 x 23639121 x 15043307 x 5929539 x 3377847 x 2149
Negative:
-1 x -1820203-7 x -260029-11 x -165473-49 x -37147-77 x -23639-121 x -15043-307 x -5929-539 x -3377-847 x -2149
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 1,820,203, 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 | 1,820,203 | |
| -1 | -1,820,203 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,820,203.
Example:
1 x 1,820,203 = 1,820,203
and
-1 x -1,820,203 = 1,820,203
Notice both answers equal 1,820,203
With that explanation out of the way, let's continue. Next, we take the number 1,820,203 and divide it by 2:
1,820,203 ÷ 2 = 910,101.5
If the quotient is a whole number, then 2 and 910,101.5 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 | 1,820,203 | |
| -1 | -1,820,203 |
Now, we try dividing 1,820,203 by 3:
1,820,203 ÷ 3 = 606,734.3333
If the quotient is a whole number, then 3 and 606,734.3333 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 | 1,820,203 | |
| -1 | -1,820,203 |
Let's try dividing by 4:
1,820,203 ÷ 4 = 455,050.75
If the quotient is a whole number, then 4 and 455,050.75 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 | 1,820,203 | |
| -1 | 1,820,203 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 49 | 77 | 121 | 307 | 539 | 847 | 2,149 | 3,377 | 5,929 | 15,043 | 23,639 | 37,147 | 165,473 | 260,029 | 1,820,203 |
| -1 | -7 | -11 | -49 | -77 | -121 | -307 | -539 | -847 | -2,149 | -3,377 | -5,929 | -15,043 | -23,639 | -37,147 | -165,473 | -260,029 | -1,820,203 |
Here are some more numbers to try:
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