A:
Positive:
1 x 1611632355 x 3223264747 x 3429005235 x 685801677 x 2380551013 x 1590953385 x 476115065 x 31819
Negative:
-1 x -161163235-5 x -32232647-47 x -3429005-235 x -685801-677 x -238055-1013 x -159095-3385 x -47611-5065 x -31819
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 161,163,235, 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 | 161,163,235 | |
| -1 | -161,163,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,163,235.
Example:
1 x 161,163,235 = 161,163,235
and
-1 x -161,163,235 = 161,163,235
Notice both answers equal 161,163,235
With that explanation out of the way, let's continue. Next, we take the number 161,163,235 and divide it by 2:
161,163,235 ÷ 2 = 80,581,617.5
If the quotient is a whole number, then 2 and 80,581,617.5 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 | 161,163,235 | |
| -1 | -161,163,235 |
Now, we try dividing 161,163,235 by 3:
161,163,235 ÷ 3 = 53,721,078.3333
If the quotient is a whole number, then 3 and 53,721,078.3333 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 | 161,163,235 | |
| -1 | -161,163,235 |
Let's try dividing by 4:
161,163,235 ÷ 4 = 40,290,808.75
If the quotient is a whole number, then 4 and 40,290,808.75 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 | 161,163,235 | |
| -1 | 161,163,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 235 | 677 | 1,013 | 3,385 | 5,065 | 31,819 | 47,611 | 159,095 | 238,055 | 685,801 | 3,429,005 | 32,232,647 | 161,163,235 |
| -1 | -5 | -47 | -235 | -677 | -1,013 | -3,385 | -5,065 | -31,819 | -47,611 | -159,095 | -238,055 | -685,801 | -3,429,005 | -32,232,647 | -161,163,235 |
Here are some more numbers to try:
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