A:
Positive:
1 x 6657556113 x 512119729 x 2295709137 x 485953377 x 1765931289 x 516491781 x 373813973 x 16757
Negative:
-1 x -66575561-13 x -5121197-29 x -2295709-137 x -485953-377 x -176593-1289 x -51649-1781 x -37381-3973 x -16757
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 66,575,561, 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 | 66,575,561 | |
| -1 | -66,575,561 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,575,561.
Example:
1 x 66,575,561 = 66,575,561
and
-1 x -66,575,561 = 66,575,561
Notice both answers equal 66,575,561
With that explanation out of the way, let's continue. Next, we take the number 66,575,561 and divide it by 2:
66,575,561 ÷ 2 = 33,287,780.5
If the quotient is a whole number, then 2 and 33,287,780.5 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 | 66,575,561 | |
| -1 | -66,575,561 |
Now, we try dividing 66,575,561 by 3:
66,575,561 ÷ 3 = 22,191,853.6667
If the quotient is a whole number, then 3 and 22,191,853.6667 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 | 66,575,561 | |
| -1 | -66,575,561 |
Let's try dividing by 4:
66,575,561 ÷ 4 = 16,643,890.25
If the quotient is a whole number, then 4 and 16,643,890.25 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 | 66,575,561 | |
| -1 | 66,575,561 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 137 | 377 | 1,289 | 1,781 | 3,973 | 16,757 | 37,381 | 51,649 | 176,593 | 485,953 | 2,295,709 | 5,121,197 | 66,575,561 |
| -1 | -13 | -29 | -137 | -377 | -1,289 | -1,781 | -3,973 | -16,757 | -37,381 | -51,649 | -176,593 | -485,953 | -2,295,709 | -5,121,197 | -66,575,561 |
Here are some more numbers to try:
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