A:
Positive:
1 x 6610325355 x 13220650723 x 28740545115 x 5748109137 x 4825055685 x 9650113151 x 20978515755 x 41957
Negative:
-1 x -661032535-5 x -132206507-23 x -28740545-115 x -5748109-137 x -4825055-685 x -965011-3151 x -209785-15755 x -41957
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 661,032,535, 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 | 661,032,535 | |
| -1 | -661,032,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 661,032,535.
Example:
1 x 661,032,535 = 661,032,535
and
-1 x -661,032,535 = 661,032,535
Notice both answers equal 661,032,535
With that explanation out of the way, let's continue. Next, we take the number 661,032,535 and divide it by 2:
661,032,535 ÷ 2 = 330,516,267.5
If the quotient is a whole number, then 2 and 330,516,267.5 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 | 661,032,535 | |
| -1 | -661,032,535 |
Now, we try dividing 661,032,535 by 3:
661,032,535 ÷ 3 = 220,344,178.3333
If the quotient is a whole number, then 3 and 220,344,178.3333 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 | 661,032,535 | |
| -1 | -661,032,535 |
Let's try dividing by 4:
661,032,535 ÷ 4 = 165,258,133.75
If the quotient is a whole number, then 4 and 165,258,133.75 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 | 661,032,535 | |
| -1 | 661,032,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 137 | 685 | 3,151 | 15,755 | 41,957 | 209,785 | 965,011 | 4,825,055 | 5,748,109 | 28,740,545 | 132,206,507 | 661,032,535 |
| -1 | -5 | -23 | -115 | -137 | -685 | -3,151 | -15,755 | -41,957 | -209,785 | -965,011 | -4,825,055 | -5,748,109 | -28,740,545 | -132,206,507 | -661,032,535 |
Here are some more numbers to try:
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