A:
Positive:
1 x 208360755 x 416721513 x 160277525 x 83344361 x 34157565 x 320555305 x 68315325 x 64111793 x 262751051 x 198251525 x 136633965 x 5255
Negative:
-1 x -20836075-5 x -4167215-13 x -1602775-25 x -833443-61 x -341575-65 x -320555-305 x -68315-325 x -64111-793 x -26275-1051 x -19825-1525 x -13663-3965 x -5255
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 20,836,075, 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 | 20,836,075 | |
| -1 | -20,836,075 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,836,075.
Example:
1 x 20,836,075 = 20,836,075
and
-1 x -20,836,075 = 20,836,075
Notice both answers equal 20,836,075
With that explanation out of the way, let's continue. Next, we take the number 20,836,075 and divide it by 2:
20,836,075 ÷ 2 = 10,418,037.5
If the quotient is a whole number, then 2 and 10,418,037.5 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 | 20,836,075 | |
| -1 | -20,836,075 |
Now, we try dividing 20,836,075 by 3:
20,836,075 ÷ 3 = 6,945,358.3333
If the quotient is a whole number, then 3 and 6,945,358.3333 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 | 20,836,075 | |
| -1 | -20,836,075 |
Let's try dividing by 4:
20,836,075 ÷ 4 = 5,209,018.75
If the quotient is a whole number, then 4 and 5,209,018.75 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 | 20,836,075 | |
| -1 | 20,836,075 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 61 | 65 | 305 | 325 | 793 | 1,051 | 1,525 | 3,965 | 5,255 | 13,663 | 19,825 | 26,275 | 64,111 | 68,315 | 320,555 | 341,575 | 833,443 | 1,602,775 | 4,167,215 | 20,836,075 |
| -1 | -5 | -13 | -25 | -61 | -65 | -305 | -325 | -793 | -1,051 | -1,525 | -3,965 | -5,255 | -13,663 | -19,825 | -26,275 | -64,111 | -68,315 | -320,555 | -341,575 | -833,443 | -1,602,775 | -4,167,215 | -20,836,075 |
Here are some more numbers to try:
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