A:
Positive:
1 x 6603035655 x 13206071331 x 2130011541 x 16104965155 x 4260023205 x 32209931271 x 5195156355 x 103903
Negative:
-1 x -660303565-5 x -132060713-31 x -21300115-41 x -16104965-155 x -4260023-205 x -3220993-1271 x -519515-6355 x -103903
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 660,303,565, 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 | 660,303,565 | |
| -1 | -660,303,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 660,303,565.
Example:
1 x 660,303,565 = 660,303,565
and
-1 x -660,303,565 = 660,303,565
Notice both answers equal 660,303,565
With that explanation out of the way, let's continue. Next, we take the number 660,303,565 and divide it by 2:
660,303,565 ÷ 2 = 330,151,782.5
If the quotient is a whole number, then 2 and 330,151,782.5 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 | 660,303,565 | |
| -1 | -660,303,565 |
Now, we try dividing 660,303,565 by 3:
660,303,565 ÷ 3 = 220,101,188.3333
If the quotient is a whole number, then 3 and 220,101,188.3333 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 | 660,303,565 | |
| -1 | -660,303,565 |
Let's try dividing by 4:
660,303,565 ÷ 4 = 165,075,891.25
If the quotient is a whole number, then 4 and 165,075,891.25 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 | 660,303,565 | |
| -1 | 660,303,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 41 | 155 | 205 | 1,271 | 6,355 | 103,903 | 519,515 | 3,220,993 | 4,260,023 | 16,104,965 | 21,300,115 | 132,060,713 | 660,303,565 |
| -1 | -5 | -31 | -41 | -155 | -205 | -1,271 | -6,355 | -103,903 | -519,515 | -3,220,993 | -4,260,023 | -16,104,965 | -21,300,115 | -132,060,713 | -660,303,565 |
Here are some more numbers to try:
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