A:
Positive:
1 x 2052521911 x 186592913 x 157886361 x 336479143 x 143533169 x 121451181 x 113399671 x 30589793 x 258831859 x 110411991 x 103092353 x 8723
Negative:
-1 x -20525219-11 x -1865929-13 x -1578863-61 x -336479-143 x -143533-169 x -121451-181 x -113399-671 x -30589-793 x -25883-1859 x -11041-1991 x -10309-2353 x -8723
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 20,525,219, 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 | 20,525,219 | |
| -1 | -20,525,219 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,525,219.
Example:
1 x 20,525,219 = 20,525,219
and
-1 x -20,525,219 = 20,525,219
Notice both answers equal 20,525,219
With that explanation out of the way, let's continue. Next, we take the number 20,525,219 and divide it by 2:
20,525,219 ÷ 2 = 10,262,609.5
If the quotient is a whole number, then 2 and 10,262,609.5 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 | 20,525,219 | |
| -1 | -20,525,219 |
Now, we try dividing 20,525,219 by 3:
20,525,219 ÷ 3 = 6,841,739.6667
If the quotient is a whole number, then 3 and 6,841,739.6667 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 | 20,525,219 | |
| -1 | -20,525,219 |
Let's try dividing by 4:
20,525,219 ÷ 4 = 5,131,304.75
If the quotient is a whole number, then 4 and 5,131,304.75 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 | 20,525,219 | |
| -1 | 20,525,219 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 61 | 143 | 169 | 181 | 671 | 793 | 1,859 | 1,991 | 2,353 | 8,723 | 10,309 | 11,041 | 25,883 | 30,589 | 113,399 | 121,451 | 143,533 | 336,479 | 1,578,863 | 1,865,929 | 20,525,219 |
| -1 | -11 | -13 | -61 | -143 | -169 | -181 | -671 | -793 | -1,859 | -1,991 | -2,353 | -8,723 | -10,309 | -11,041 | -25,883 | -30,589 | -113,399 | -121,451 | -143,533 | -336,479 | -1,578,863 | -1,865,929 | -20,525,219 |
Here are some more numbers to try:
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