A:
Positive:
1 x 20510421113 x 1577724729 x 7072559131 x 1565681377 x 5440431703 x 1204373799 x 539894153 x 49387
Negative:
-1 x -205104211-13 x -15777247-29 x -7072559-131 x -1565681-377 x -544043-1703 x -120437-3799 x -53989-4153 x -49387
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 205,104,211, 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 | 205,104,211 | |
| -1 | -205,104,211 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 205,104,211.
Example:
1 x 205,104,211 = 205,104,211
and
-1 x -205,104,211 = 205,104,211
Notice both answers equal 205,104,211
With that explanation out of the way, let's continue. Next, we take the number 205,104,211 and divide it by 2:
205,104,211 ÷ 2 = 102,552,105.5
If the quotient is a whole number, then 2 and 102,552,105.5 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 | 205,104,211 | |
| -1 | -205,104,211 |
Now, we try dividing 205,104,211 by 3:
205,104,211 ÷ 3 = 68,368,070.3333
If the quotient is a whole number, then 3 and 68,368,070.3333 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 | 205,104,211 | |
| -1 | -205,104,211 |
Let's try dividing by 4:
205,104,211 ÷ 4 = 51,276,052.75
If the quotient is a whole number, then 4 and 51,276,052.75 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 | 205,104,211 | |
| -1 | 205,104,211 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 131 | 377 | 1,703 | 3,799 | 4,153 | 49,387 | 53,989 | 120,437 | 544,043 | 1,565,681 | 7,072,559 | 15,777,247 | 205,104,211 |
| -1 | -13 | -29 | -131 | -377 | -1,703 | -3,799 | -4,153 | -49,387 | -53,989 | -120,437 | -544,043 | -1,565,681 | -7,072,559 | -15,777,247 | -205,104,211 |
Here are some more numbers to try:
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