A:
Positive:
1 x 2153440311 x 195767361 x 35302367 x 321409479 x 44957671 x 32093737 x 292194087 x 5269
Negative:
-1 x -21534403-11 x -1957673-61 x -353023-67 x -321409-479 x -44957-671 x -32093-737 x -29219-4087 x -5269
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 21,534,403, 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 | 21,534,403 | |
| -1 | -21,534,403 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,534,403.
Example:
1 x 21,534,403 = 21,534,403
and
-1 x -21,534,403 = 21,534,403
Notice both answers equal 21,534,403
With that explanation out of the way, let's continue. Next, we take the number 21,534,403 and divide it by 2:
21,534,403 ÷ 2 = 10,767,201.5
If the quotient is a whole number, then 2 and 10,767,201.5 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 | 21,534,403 | |
| -1 | -21,534,403 |
Now, we try dividing 21,534,403 by 3:
21,534,403 ÷ 3 = 7,178,134.3333
If the quotient is a whole number, then 3 and 7,178,134.3333 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 | 21,534,403 | |
| -1 | -21,534,403 |
Let's try dividing by 4:
21,534,403 ÷ 4 = 5,383,600.75
If the quotient is a whole number, then 4 and 5,383,600.75 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 | 21,534,403 | |
| -1 | 21,534,403 |
If you did it right, you will end up with this table:
| 1 | 11 | 61 | 67 | 479 | 671 | 737 | 4,087 | 5,269 | 29,219 | 32,093 | 44,957 | 321,409 | 353,023 | 1,957,673 | 21,534,403 |
| -1 | -11 | -61 | -67 | -479 | -671 | -737 | -4,087 | -5,269 | -29,219 | -32,093 | -44,957 | -321,409 | -353,023 | -1,957,673 | -21,534,403 |
Here are some more numbers to try:
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