A:
Positive:
1 x 7256042055 x 14512084119 x 3818969595 x 7637939449 x 16160452245 x 3232098531 x 8505517011 x 42655
Negative:
-1 x -725604205-5 x -145120841-19 x -38189695-95 x -7637939-449 x -1616045-2245 x -323209-8531 x -85055-17011 x -42655
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 725,604,205, 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 | 725,604,205 | |
| -1 | -725,604,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 725,604,205.
Example:
1 x 725,604,205 = 725,604,205
and
-1 x -725,604,205 = 725,604,205
Notice both answers equal 725,604,205
With that explanation out of the way, let's continue. Next, we take the number 725,604,205 and divide it by 2:
725,604,205 ÷ 2 = 362,802,102.5
If the quotient is a whole number, then 2 and 362,802,102.5 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 | 725,604,205 | |
| -1 | -725,604,205 |
Now, we try dividing 725,604,205 by 3:
725,604,205 ÷ 3 = 241,868,068.3333
If the quotient is a whole number, then 3 and 241,868,068.3333 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 | 725,604,205 | |
| -1 | -725,604,205 |
Let's try dividing by 4:
725,604,205 ÷ 4 = 181,401,051.25
If the quotient is a whole number, then 4 and 181,401,051.25 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 | 725,604,205 | |
| -1 | 725,604,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 449 | 2,245 | 8,531 | 17,011 | 42,655 | 85,055 | 323,209 | 1,616,045 | 7,637,939 | 38,189,695 | 145,120,841 | 725,604,205 |
| -1 | -5 | -19 | -95 | -449 | -2,245 | -8,531 | -17,011 | -42,655 | -85,055 | -323,209 | -1,616,045 | -7,637,939 | -38,189,695 | -145,120,841 | -725,604,205 |
Here are some more numbers to try:
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