A:
Positive:
1 x 16636443117 x 978614371 x 2343161337 x 493663409 x 4067591207 x 1378335729 x 290396953 x 23927
Negative:
-1 x -166364431-17 x -9786143-71 x -2343161-337 x -493663-409 x -406759-1207 x -137833-5729 x -29039-6953 x -23927
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 166,364,431, 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 | 166,364,431 | |
| -1 | -166,364,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,364,431.
Example:
1 x 166,364,431 = 166,364,431
and
-1 x -166,364,431 = 166,364,431
Notice both answers equal 166,364,431
With that explanation out of the way, let's continue. Next, we take the number 166,364,431 and divide it by 2:
166,364,431 ÷ 2 = 83,182,215.5
If the quotient is a whole number, then 2 and 83,182,215.5 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 | 166,364,431 | |
| -1 | -166,364,431 |
Now, we try dividing 166,364,431 by 3:
166,364,431 ÷ 3 = 55,454,810.3333
If the quotient is a whole number, then 3 and 55,454,810.3333 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 | 166,364,431 | |
| -1 | -166,364,431 |
Let's try dividing by 4:
166,364,431 ÷ 4 = 41,591,107.75
If the quotient is a whole number, then 4 and 41,591,107.75 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 | 166,364,431 | |
| -1 | 166,364,431 |
If you did it right, you will end up with this table:
| 1 | 17 | 71 | 337 | 409 | 1,207 | 5,729 | 6,953 | 23,927 | 29,039 | 137,833 | 406,759 | 493,663 | 2,343,161 | 9,786,143 | 166,364,431 |
| -1 | -17 | -71 | -337 | -409 | -1,207 | -5,729 | -6,953 | -23,927 | -29,039 | -137,833 | -406,759 | -493,663 | -2,343,161 | -9,786,143 | -166,364,431 |
Here are some more numbers to try:
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