A:
Positive:
1 x 1665164417 x 2378806313 x 1280895747 x 354290391 x 1829851329 x 506129611 x 2725314277 x 38933
Negative:
-1 x -166516441-7 x -23788063-13 x -12808957-47 x -3542903-91 x -1829851-329 x -506129-611 x -272531-4277 x -38933
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 166,516,441, 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 | 166,516,441 | |
| -1 | -166,516,441 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,516,441.
Example:
1 x 166,516,441 = 166,516,441
and
-1 x -166,516,441 = 166,516,441
Notice both answers equal 166,516,441
With that explanation out of the way, let's continue. Next, we take the number 166,516,441 and divide it by 2:
166,516,441 ÷ 2 = 83,258,220.5
If the quotient is a whole number, then 2 and 83,258,220.5 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 | 166,516,441 | |
| -1 | -166,516,441 |
Now, we try dividing 166,516,441 by 3:
166,516,441 ÷ 3 = 55,505,480.3333
If the quotient is a whole number, then 3 and 55,505,480.3333 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 | 166,516,441 | |
| -1 | -166,516,441 |
Let's try dividing by 4:
166,516,441 ÷ 4 = 41,629,110.25
If the quotient is a whole number, then 4 and 41,629,110.25 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 | 166,516,441 | |
| -1 | 166,516,441 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 47 | 91 | 329 | 611 | 4,277 | 38,933 | 272,531 | 506,129 | 1,829,851 | 3,542,903 | 12,808,957 | 23,788,063 | 166,516,441 |
| -1 | -7 | -13 | -47 | -91 | -329 | -611 | -4,277 | -38,933 | -272,531 | -506,129 | -1,829,851 | -3,542,903 | -12,808,957 | -23,788,063 | -166,516,441 |
Here are some more numbers to try:
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