A:
Positive:
1 x 61620516111 x 5601865113 x 47400397143 x 43091271289 x 4780493343 x 18432714179 x 4345916757 x 36773
Negative:
-1 x -616205161-11 x -56018651-13 x -47400397-143 x -4309127-1289 x -478049-3343 x -184327-14179 x -43459-16757 x -36773
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 616,205,161, 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 | 616,205,161 | |
| -1 | -616,205,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 616,205,161.
Example:
1 x 616,205,161 = 616,205,161
and
-1 x -616,205,161 = 616,205,161
Notice both answers equal 616,205,161
With that explanation out of the way, let's continue. Next, we take the number 616,205,161 and divide it by 2:
616,205,161 ÷ 2 = 308,102,580.5
If the quotient is a whole number, then 2 and 308,102,580.5 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 | 616,205,161 | |
| -1 | -616,205,161 |
Now, we try dividing 616,205,161 by 3:
616,205,161 ÷ 3 = 205,401,720.3333
If the quotient is a whole number, then 3 and 205,401,720.3333 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 | 616,205,161 | |
| -1 | -616,205,161 |
Let's try dividing by 4:
616,205,161 ÷ 4 = 154,051,290.25
If the quotient is a whole number, then 4 and 154,051,290.25 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 | 616,205,161 | |
| -1 | 616,205,161 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 1,289 | 3,343 | 14,179 | 16,757 | 36,773 | 43,459 | 184,327 | 478,049 | 4,309,127 | 47,400,397 | 56,018,651 | 616,205,161 |
| -1 | -11 | -13 | -143 | -1,289 | -3,343 | -14,179 | -16,757 | -36,773 | -43,459 | -184,327 | -478,049 | -4,309,127 | -47,400,397 | -56,018,651 | -616,205,161 |
Here are some more numbers to try:
Try the factor calculator