A:
Positive:
1 x 664181355 x 132836277 x 948830523 x 288774535 x 1897661115 x 577549161 x 412535805 x 82507
Negative:
-1 x -66418135-5 x -13283627-7 x -9488305-23 x -2887745-35 x -1897661-115 x -577549-161 x -412535-805 x -82507
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 66,418,135, 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 | 66,418,135 | |
| -1 | -66,418,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,418,135.
Example:
1 x 66,418,135 = 66,418,135
and
-1 x -66,418,135 = 66,418,135
Notice both answers equal 66,418,135
With that explanation out of the way, let's continue. Next, we take the number 66,418,135 and divide it by 2:
66,418,135 ÷ 2 = 33,209,067.5
If the quotient is a whole number, then 2 and 33,209,067.5 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 | 66,418,135 | |
| -1 | -66,418,135 |
Now, we try dividing 66,418,135 by 3:
66,418,135 ÷ 3 = 22,139,378.3333
If the quotient is a whole number, then 3 and 22,139,378.3333 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 | 66,418,135 | |
| -1 | -66,418,135 |
Let's try dividing by 4:
66,418,135 ÷ 4 = 16,604,533.75
If the quotient is a whole number, then 4 and 16,604,533.75 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 | 66,418,135 | |
| -1 | 66,418,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 82,507 | 412,535 | 577,549 | 1,897,661 | 2,887,745 | 9,488,305 | 13,283,627 | 66,418,135 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -82,507 | -412,535 | -577,549 | -1,897,661 | -2,887,745 | -9,488,305 | -13,283,627 | -66,418,135 |
Here are some more numbers to try:
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