A:
Positive:
1 x 1547860937 x 2211229911 x 1407146377 x 2010209107 x 1446599749 x 2066571177 x 1315098239 x 18787
Negative:
-1 x -154786093-7 x -22112299-11 x -14071463-77 x -2010209-107 x -1446599-749 x -206657-1177 x -131509-8239 x -18787
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 154,786,093, 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 | 154,786,093 | |
| -1 | -154,786,093 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 154,786,093.
Example:
1 x 154,786,093 = 154,786,093
and
-1 x -154,786,093 = 154,786,093
Notice both answers equal 154,786,093
With that explanation out of the way, let's continue. Next, we take the number 154,786,093 and divide it by 2:
154,786,093 ÷ 2 = 77,393,046.5
If the quotient is a whole number, then 2 and 77,393,046.5 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 | 154,786,093 | |
| -1 | -154,786,093 |
Now, we try dividing 154,786,093 by 3:
154,786,093 ÷ 3 = 51,595,364.3333
If the quotient is a whole number, then 3 and 51,595,364.3333 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 | 154,786,093 | |
| -1 | -154,786,093 |
Let's try dividing by 4:
154,786,093 ÷ 4 = 38,696,523.25
If the quotient is a whole number, then 4 and 38,696,523.25 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 | 154,786,093 | |
| -1 | 154,786,093 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 107 | 749 | 1,177 | 8,239 | 18,787 | 131,509 | 206,657 | 1,446,599 | 2,010,209 | 14,071,463 | 22,112,299 | 154,786,093 |
| -1 | -7 | -11 | -77 | -107 | -749 | -1,177 | -8,239 | -18,787 | -131,509 | -206,657 | -1,446,599 | -2,010,209 | -14,071,463 | -22,112,299 | -154,786,093 |
Here are some more numbers to try:
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