A:
Positive:
1 x 1661034137 x 2372905917 x 9770789119 x 1395827331 x 5018232317 x 716894217 x 393895627 x 29519
Negative:
-1 x -166103413-7 x -23729059-17 x -9770789-119 x -1395827-331 x -501823-2317 x -71689-4217 x -39389-5627 x -29519
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 166,103,413, 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 | 166,103,413 | |
| -1 | -166,103,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,103,413.
Example:
1 x 166,103,413 = 166,103,413
and
-1 x -166,103,413 = 166,103,413
Notice both answers equal 166,103,413
With that explanation out of the way, let's continue. Next, we take the number 166,103,413 and divide it by 2:
166,103,413 ÷ 2 = 83,051,706.5
If the quotient is a whole number, then 2 and 83,051,706.5 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 | 166,103,413 | |
| -1 | -166,103,413 |
Now, we try dividing 166,103,413 by 3:
166,103,413 ÷ 3 = 55,367,804.3333
If the quotient is a whole number, then 3 and 55,367,804.3333 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 | 166,103,413 | |
| -1 | -166,103,413 |
Let's try dividing by 4:
166,103,413 ÷ 4 = 41,525,853.25
If the quotient is a whole number, then 4 and 41,525,853.25 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 | 166,103,413 | |
| -1 | 166,103,413 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 331 | 2,317 | 4,217 | 5,627 | 29,519 | 39,389 | 71,689 | 501,823 | 1,395,827 | 9,770,789 | 23,729,059 | 166,103,413 |
| -1 | -7 | -17 | -119 | -331 | -2,317 | -4,217 | -5,627 | -29,519 | -39,389 | -71,689 | -501,823 | -1,395,827 | -9,770,789 | -23,729,059 | -166,103,413 |
Here are some more numbers to try:
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