A:
Positive:
1 x 6605476255 x 13210952525 x 26421905125 x 5284381167 x 3955375835 x 7910754175 x 15821520875 x 31643
Negative:
-1 x -660547625-5 x -132109525-25 x -26421905-125 x -5284381-167 x -3955375-835 x -791075-4175 x -158215-20875 x -31643
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 660,547,625, 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 | 660,547,625 | |
| -1 | -660,547,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 660,547,625.
Example:
1 x 660,547,625 = 660,547,625
and
-1 x -660,547,625 = 660,547,625
Notice both answers equal 660,547,625
With that explanation out of the way, let's continue. Next, we take the number 660,547,625 and divide it by 2:
660,547,625 ÷ 2 = 330,273,812.5
If the quotient is a whole number, then 2 and 330,273,812.5 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 | 660,547,625 | |
| -1 | -660,547,625 |
Now, we try dividing 660,547,625 by 3:
660,547,625 ÷ 3 = 220,182,541.6667
If the quotient is a whole number, then 3 and 220,182,541.6667 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 | 660,547,625 | |
| -1 | -660,547,625 |
Let's try dividing by 4:
660,547,625 ÷ 4 = 165,136,906.25
If the quotient is a whole number, then 4 and 165,136,906.25 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 | 660,547,625 | |
| -1 | 660,547,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 167 | 835 | 4,175 | 20,875 | 31,643 | 158,215 | 791,075 | 3,955,375 | 5,284,381 | 26,421,905 | 132,109,525 | 660,547,625 |
| -1 | -5 | -25 | -125 | -167 | -835 | -4,175 | -20,875 | -31,643 | -158,215 | -791,075 | -3,955,375 | -5,284,381 | -26,421,905 | -132,109,525 | -660,547,625 |
Here are some more numbers to try:
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