A:
Positive:
1 x 2045012455 x 4090024913 x 1573086517 x 1202948565 x 314617385 x 2405897221 x 9253451105 x 185069
Negative:
-1 x -204501245-5 x -40900249-13 x -15730865-17 x -12029485-65 x -3146173-85 x -2405897-221 x -925345-1105 x -185069
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 204,501,245, 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 | 204,501,245 | |
| -1 | -204,501,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 204,501,245.
Example:
1 x 204,501,245 = 204,501,245
and
-1 x -204,501,245 = 204,501,245
Notice both answers equal 204,501,245
With that explanation out of the way, let's continue. Next, we take the number 204,501,245 and divide it by 2:
204,501,245 ÷ 2 = 102,250,622.5
If the quotient is a whole number, then 2 and 102,250,622.5 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 | 204,501,245 | |
| -1 | -204,501,245 |
Now, we try dividing 204,501,245 by 3:
204,501,245 ÷ 3 = 68,167,081.6667
If the quotient is a whole number, then 3 and 68,167,081.6667 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 | 204,501,245 | |
| -1 | -204,501,245 |
Let's try dividing by 4:
204,501,245 ÷ 4 = 51,125,311.25
If the quotient is a whole number, then 4 and 51,125,311.25 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 | 204,501,245 | |
| -1 | 204,501,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 221 | 1,105 | 185,069 | 925,345 | 2,405,897 | 3,146,173 | 12,029,485 | 15,730,865 | 40,900,249 | 204,501,245 |
| -1 | -5 | -13 | -17 | -65 | -85 | -221 | -1,105 | -185,069 | -925,345 | -2,405,897 | -3,146,173 | -12,029,485 | -15,730,865 | -40,900,249 | -204,501,245 |
Here are some more numbers to try:
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