A:
Positive:
1 x 2175912713 x 167377923 x 94604961 x 356707299 x 72773793 x 274391193 x 182391403 x 15509
Negative:
-1 x -21759127-13 x -1673779-23 x -946049-61 x -356707-299 x -72773-793 x -27439-1193 x -18239-1403 x -15509
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 21,759,127, 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 | 21,759,127 | |
| -1 | -21,759,127 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,759,127.
Example:
1 x 21,759,127 = 21,759,127
and
-1 x -21,759,127 = 21,759,127
Notice both answers equal 21,759,127
With that explanation out of the way, let's continue. Next, we take the number 21,759,127 and divide it by 2:
21,759,127 ÷ 2 = 10,879,563.5
If the quotient is a whole number, then 2 and 10,879,563.5 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 | 21,759,127 | |
| -1 | -21,759,127 |
Now, we try dividing 21,759,127 by 3:
21,759,127 ÷ 3 = 7,253,042.3333
If the quotient is a whole number, then 3 and 7,253,042.3333 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 | 21,759,127 | |
| -1 | -21,759,127 |
Let's try dividing by 4:
21,759,127 ÷ 4 = 5,439,781.75
If the quotient is a whole number, then 4 and 5,439,781.75 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 | 21,759,127 | |
| -1 | 21,759,127 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 61 | 299 | 793 | 1,193 | 1,403 | 15,509 | 18,239 | 27,439 | 72,773 | 356,707 | 946,049 | 1,673,779 | 21,759,127 |
| -1 | -13 | -23 | -61 | -299 | -793 | -1,193 | -1,403 | -15,509 | -18,239 | -27,439 | -72,773 | -356,707 | -946,049 | -1,673,779 | -21,759,127 |
Here are some more numbers to try:
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