A:
Positive:
1 x 16191106113 x 1245469767 x 2416583211 x 767351871 x 185891881 x 1837812743 x 5902711453 x 14137
Negative:
-1 x -161911061-13 x -12454697-67 x -2416583-211 x -767351-871 x -185891-881 x -183781-2743 x -59027-11453 x -14137
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 161,911,061, 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 | 161,911,061 | |
| -1 | -161,911,061 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,911,061.
Example:
1 x 161,911,061 = 161,911,061
and
-1 x -161,911,061 = 161,911,061
Notice both answers equal 161,911,061
With that explanation out of the way, let's continue. Next, we take the number 161,911,061 and divide it by 2:
161,911,061 ÷ 2 = 80,955,530.5
If the quotient is a whole number, then 2 and 80,955,530.5 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 | 161,911,061 | |
| -1 | -161,911,061 |
Now, we try dividing 161,911,061 by 3:
161,911,061 ÷ 3 = 53,970,353.6667
If the quotient is a whole number, then 3 and 53,970,353.6667 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 | 161,911,061 | |
| -1 | -161,911,061 |
Let's try dividing by 4:
161,911,061 ÷ 4 = 40,477,765.25
If the quotient is a whole number, then 4 and 40,477,765.25 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 | 161,911,061 | |
| -1 | 161,911,061 |
If you did it right, you will end up with this table:
| 1 | 13 | 67 | 211 | 871 | 881 | 2,743 | 11,453 | 14,137 | 59,027 | 183,781 | 185,891 | 767,351 | 2,416,583 | 12,454,697 | 161,911,061 |
| -1 | -13 | -67 | -211 | -871 | -881 | -2,743 | -11,453 | -14,137 | -59,027 | -183,781 | -185,891 | -767,351 | -2,416,583 | -12,454,697 | -161,911,061 |
Here are some more numbers to try:
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