A:
Positive:
1 x 1642554655 x 3285109311 x 1493231555 x 2986463137 x 1198945685 x 2397891507 x 1089957535 x 21799
Negative:
-1 x -164255465-5 x -32851093-11 x -14932315-55 x -2986463-137 x -1198945-685 x -239789-1507 x -108995-7535 x -21799
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 164,255,465, 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 | 164,255,465 | |
| -1 | -164,255,465 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,255,465.
Example:
1 x 164,255,465 = 164,255,465
and
-1 x -164,255,465 = 164,255,465
Notice both answers equal 164,255,465
With that explanation out of the way, let's continue. Next, we take the number 164,255,465 and divide it by 2:
164,255,465 ÷ 2 = 82,127,732.5
If the quotient is a whole number, then 2 and 82,127,732.5 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 | 164,255,465 | |
| -1 | -164,255,465 |
Now, we try dividing 164,255,465 by 3:
164,255,465 ÷ 3 = 54,751,821.6667
If the quotient is a whole number, then 3 and 54,751,821.6667 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 | 164,255,465 | |
| -1 | -164,255,465 |
Let's try dividing by 4:
164,255,465 ÷ 4 = 41,063,866.25
If the quotient is a whole number, then 4 and 41,063,866.25 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 | 164,255,465 | |
| -1 | 164,255,465 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 137 | 685 | 1,507 | 7,535 | 21,799 | 108,995 | 239,789 | 1,198,945 | 2,986,463 | 14,932,315 | 32,851,093 | 164,255,465 |
| -1 | -5 | -11 | -55 | -137 | -685 | -1,507 | -7,535 | -21,799 | -108,995 | -239,789 | -1,198,945 | -2,986,463 | -14,932,315 | -32,851,093 | -164,255,465 |
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