A:
Positive:
1 x 316161655 x 63232337 x 451659535 x 903319293 x 1079051465 x 215812051 x 154153083 x 10255
Negative:
-1 x -31616165-5 x -6323233-7 x -4516595-35 x -903319-293 x -107905-1465 x -21581-2051 x -15415-3083 x -10255
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 31,616,165, 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 | 31,616,165 | |
| -1 | -31,616,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,616,165.
Example:
1 x 31,616,165 = 31,616,165
and
-1 x -31,616,165 = 31,616,165
Notice both answers equal 31,616,165
With that explanation out of the way, let's continue. Next, we take the number 31,616,165 and divide it by 2:
31,616,165 ÷ 2 = 15,808,082.5
If the quotient is a whole number, then 2 and 15,808,082.5 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 | 31,616,165 | |
| -1 | -31,616,165 |
Now, we try dividing 31,616,165 by 3:
31,616,165 ÷ 3 = 10,538,721.6667
If the quotient is a whole number, then 3 and 10,538,721.6667 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 | 31,616,165 | |
| -1 | -31,616,165 |
Let's try dividing by 4:
31,616,165 ÷ 4 = 7,904,041.25
If the quotient is a whole number, then 4 and 7,904,041.25 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 | 31,616,165 | |
| -1 | 31,616,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 293 | 1,465 | 2,051 | 3,083 | 10,255 | 15,415 | 21,581 | 107,905 | 903,319 | 4,516,595 | 6,323,233 | 31,616,165 |
| -1 | -5 | -7 | -35 | -293 | -1,465 | -2,051 | -3,083 | -10,255 | -15,415 | -21,581 | -107,905 | -903,319 | -4,516,595 | -6,323,233 | -31,616,165 |
Here are some more numbers to try:
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