A:
Positive:
1 x 661603255 x 132320657 x 945147511 x 601457525 x 264641335 x 189029555 x 120291577 x 859225175 x 378059275 x 240583385 x 1718451925 x 34369
Negative:
-1 x -66160325-5 x -13232065-7 x -9451475-11 x -6014575-25 x -2646413-35 x -1890295-55 x -1202915-77 x -859225-175 x -378059-275 x -240583-385 x -171845-1925 x -34369
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 66,160,325, 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 | 66,160,325 | |
| -1 | -66,160,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,160,325.
Example:
1 x 66,160,325 = 66,160,325
and
-1 x -66,160,325 = 66,160,325
Notice both answers equal 66,160,325
With that explanation out of the way, let's continue. Next, we take the number 66,160,325 and divide it by 2:
66,160,325 ÷ 2 = 33,080,162.5
If the quotient is a whole number, then 2 and 33,080,162.5 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 | 66,160,325 | |
| -1 | -66,160,325 |
Now, we try dividing 66,160,325 by 3:
66,160,325 ÷ 3 = 22,053,441.6667
If the quotient is a whole number, then 3 and 22,053,441.6667 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 | 66,160,325 | |
| -1 | -66,160,325 |
Let's try dividing by 4:
66,160,325 ÷ 4 = 16,540,081.25
If the quotient is a whole number, then 4 and 16,540,081.25 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 | 66,160,325 | |
| -1 | 66,160,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 25 | 35 | 55 | 77 | 175 | 275 | 385 | 1,925 | 34,369 | 171,845 | 240,583 | 378,059 | 859,225 | 1,202,915 | 1,890,295 | 2,646,413 | 6,014,575 | 9,451,475 | 13,232,065 | 66,160,325 |
| -1 | -5 | -7 | -11 | -25 | -35 | -55 | -77 | -175 | -275 | -385 | -1,925 | -34,369 | -171,845 | -240,583 | -378,059 | -859,225 | -1,202,915 | -1,890,295 | -2,646,413 | -6,014,575 | -9,451,475 | -13,232,065 | -66,160,325 |
Here are some more numbers to try:
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