A:
Positive:
1 x 1635061155 x 3270122319 x 860558595 x 1721117163 x 1003105815 x 2006213097 x 5279510559 x 15485
Negative:
-1 x -163506115-5 x -32701223-19 x -8605585-95 x -1721117-163 x -1003105-815 x -200621-3097 x -52795-10559 x -15485
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 163,506,115, 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 | 163,506,115 | |
| -1 | -163,506,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 163,506,115.
Example:
1 x 163,506,115 = 163,506,115
and
-1 x -163,506,115 = 163,506,115
Notice both answers equal 163,506,115
With that explanation out of the way, let's continue. Next, we take the number 163,506,115 and divide it by 2:
163,506,115 ÷ 2 = 81,753,057.5
If the quotient is a whole number, then 2 and 81,753,057.5 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 | 163,506,115 | |
| -1 | -163,506,115 |
Now, we try dividing 163,506,115 by 3:
163,506,115 ÷ 3 = 54,502,038.3333
If the quotient is a whole number, then 3 and 54,502,038.3333 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 | 163,506,115 | |
| -1 | -163,506,115 |
Let's try dividing by 4:
163,506,115 ÷ 4 = 40,876,528.75
If the quotient is a whole number, then 4 and 40,876,528.75 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 | 163,506,115 | |
| -1 | 163,506,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 163 | 815 | 3,097 | 10,559 | 15,485 | 52,795 | 200,621 | 1,003,105 | 1,721,117 | 8,605,585 | 32,701,223 | 163,506,115 |
| -1 | -5 | -19 | -95 | -163 | -815 | -3,097 | -10,559 | -15,485 | -52,795 | -200,621 | -1,003,105 | -1,721,117 | -8,605,585 | -32,701,223 | -163,506,115 |
Here are some more numbers to try:
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