A:
Positive:
1 x 1623452155 x 3246904319 x 854448595 x 1708897107 x 1517245535 x 3034492033 x 7985510165 x 15971
Negative:
-1 x -162345215-5 x -32469043-19 x -8544485-95 x -1708897-107 x -1517245-535 x -303449-2033 x -79855-10165 x -15971
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 162,345,215, 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 | 162,345,215 | |
| -1 | -162,345,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,345,215.
Example:
1 x 162,345,215 = 162,345,215
and
-1 x -162,345,215 = 162,345,215
Notice both answers equal 162,345,215
With that explanation out of the way, let's continue. Next, we take the number 162,345,215 and divide it by 2:
162,345,215 ÷ 2 = 81,172,607.5
If the quotient is a whole number, then 2 and 81,172,607.5 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 | 162,345,215 | |
| -1 | -162,345,215 |
Now, we try dividing 162,345,215 by 3:
162,345,215 ÷ 3 = 54,115,071.6667
If the quotient is a whole number, then 3 and 54,115,071.6667 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 | 162,345,215 | |
| -1 | -162,345,215 |
Let's try dividing by 4:
162,345,215 ÷ 4 = 40,586,303.75
If the quotient is a whole number, then 4 and 40,586,303.75 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 | 162,345,215 | |
| -1 | 162,345,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 107 | 535 | 2,033 | 10,165 | 15,971 | 79,855 | 303,449 | 1,517,245 | 1,708,897 | 8,544,485 | 32,469,043 | 162,345,215 |
| -1 | -5 | -19 | -95 | -107 | -535 | -2,033 | -10,165 | -15,971 | -79,855 | -303,449 | -1,517,245 | -1,708,897 | -8,544,485 | -32,469,043 | -162,345,215 |
Here are some more numbers to try:
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