A:
Positive:
1 x 1626116055 x 3252232113 x 1250858565 x 2501717251 x 6478551255 x 1295713263 x 498359967 x 16315
Negative:
-1 x -162611605-5 x -32522321-13 x -12508585-65 x -2501717-251 x -647855-1255 x -129571-3263 x -49835-9967 x -16315
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 162,611,605, 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 | 162,611,605 | |
| -1 | -162,611,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,611,605.
Example:
1 x 162,611,605 = 162,611,605
and
-1 x -162,611,605 = 162,611,605
Notice both answers equal 162,611,605
With that explanation out of the way, let's continue. Next, we take the number 162,611,605 and divide it by 2:
162,611,605 ÷ 2 = 81,305,802.5
If the quotient is a whole number, then 2 and 81,305,802.5 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 | 162,611,605 | |
| -1 | -162,611,605 |
Now, we try dividing 162,611,605 by 3:
162,611,605 ÷ 3 = 54,203,868.3333
If the quotient is a whole number, then 3 and 54,203,868.3333 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 | 162,611,605 | |
| -1 | -162,611,605 |
Let's try dividing by 4:
162,611,605 ÷ 4 = 40,652,901.25
If the quotient is a whole number, then 4 and 40,652,901.25 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 | 162,611,605 | |
| -1 | 162,611,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 251 | 1,255 | 3,263 | 9,967 | 16,315 | 49,835 | 129,571 | 647,855 | 2,501,717 | 12,508,585 | 32,522,321 | 162,611,605 |
| -1 | -5 | -13 | -65 | -251 | -1,255 | -3,263 | -9,967 | -16,315 | -49,835 | -129,571 | -647,855 | -2,501,717 | -12,508,585 | -32,522,321 | -162,611,605 |
Here are some more numbers to try:
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