A:
Positive:
1 x 21436037 x 30622911 x 19487341 x 5228349 x 4374777 x 2783997 x 22099287 x 7469451 x 4753539 x 3977679 x 31571067 x 2009
Negative:
-1 x -2143603-7 x -306229-11 x -194873-41 x -52283-49 x -43747-77 x -27839-97 x -22099-287 x -7469-451 x -4753-539 x -3977-679 x -3157-1067 x -2009
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 2,143,603, 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 | 2,143,603 | |
| -1 | -2,143,603 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,143,603.
Example:
1 x 2,143,603 = 2,143,603
and
-1 x -2,143,603 = 2,143,603
Notice both answers equal 2,143,603
With that explanation out of the way, let's continue. Next, we take the number 2,143,603 and divide it by 2:
2,143,603 ÷ 2 = 1,071,801.5
If the quotient is a whole number, then 2 and 1,071,801.5 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 | 2,143,603 | |
| -1 | -2,143,603 |
Now, we try dividing 2,143,603 by 3:
2,143,603 ÷ 3 = 714,534.3333
If the quotient is a whole number, then 3 and 714,534.3333 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 | 2,143,603 | |
| -1 | -2,143,603 |
Let's try dividing by 4:
2,143,603 ÷ 4 = 535,900.75
If the quotient is a whole number, then 4 and 535,900.75 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 | 2,143,603 | |
| -1 | 2,143,603 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 41 | 49 | 77 | 97 | 287 | 451 | 539 | 679 | 1,067 | 2,009 | 3,157 | 3,977 | 4,753 | 7,469 | 22,099 | 27,839 | 43,747 | 52,283 | 194,873 | 306,229 | 2,143,603 |
| -1 | -7 | -11 | -41 | -49 | -77 | -97 | -287 | -451 | -539 | -679 | -1,067 | -2,009 | -3,157 | -3,977 | -4,753 | -7,469 | -22,099 | -27,839 | -43,747 | -52,283 | -194,873 | -306,229 | -2,143,603 |
Here are some more numbers to try:
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