A:
Positive:
1 x 1641285355 x 3282570741 x 4003135101 x 1625035205 x 800627505 x 3250074141 x 396357927 x 20705
Negative:
-1 x -164128535-5 x -32825707-41 x -4003135-101 x -1625035-205 x -800627-505 x -325007-4141 x -39635-7927 x -20705
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 164,128,535, 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 | 164,128,535 | |
| -1 | -164,128,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,128,535.
Example:
1 x 164,128,535 = 164,128,535
and
-1 x -164,128,535 = 164,128,535
Notice both answers equal 164,128,535
With that explanation out of the way, let's continue. Next, we take the number 164,128,535 and divide it by 2:
164,128,535 ÷ 2 = 82,064,267.5
If the quotient is a whole number, then 2 and 82,064,267.5 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 | 164,128,535 | |
| -1 | -164,128,535 |
Now, we try dividing 164,128,535 by 3:
164,128,535 ÷ 3 = 54,709,511.6667
If the quotient is a whole number, then 3 and 54,709,511.6667 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 | 164,128,535 | |
| -1 | -164,128,535 |
Let's try dividing by 4:
164,128,535 ÷ 4 = 41,032,133.75
If the quotient is a whole number, then 4 and 41,032,133.75 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 | 164,128,535 | |
| -1 | 164,128,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 101 | 205 | 505 | 4,141 | 7,927 | 20,705 | 39,635 | 325,007 | 800,627 | 1,625,035 | 4,003,135 | 32,825,707 | 164,128,535 |
| -1 | -5 | -41 | -101 | -205 | -505 | -4,141 | -7,927 | -20,705 | -39,635 | -325,007 | -800,627 | -1,625,035 | -4,003,135 | -32,825,707 | -164,128,535 |
Here are some more numbers to try:
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