A:
Positive:
1 x 1780101055 x 356020217 x 2543001513 x 1369308535 x 508600365 x 273861791 x 1956155455 x 391231
Negative:
-1 x -178010105-5 x -35602021-7 x -25430015-13 x -13693085-35 x -5086003-65 x -2738617-91 x -1956155-455 x -391231
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 178,010,105, 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 | 178,010,105 | |
| -1 | -178,010,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 178,010,105.
Example:
1 x 178,010,105 = 178,010,105
and
-1 x -178,010,105 = 178,010,105
Notice both answers equal 178,010,105
With that explanation out of the way, let's continue. Next, we take the number 178,010,105 and divide it by 2:
178,010,105 ÷ 2 = 89,005,052.5
If the quotient is a whole number, then 2 and 89,005,052.5 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 | 178,010,105 | |
| -1 | -178,010,105 |
Now, we try dividing 178,010,105 by 3:
178,010,105 ÷ 3 = 59,336,701.6667
If the quotient is a whole number, then 3 and 59,336,701.6667 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 | 178,010,105 | |
| -1 | -178,010,105 |
Let's try dividing by 4:
178,010,105 ÷ 4 = 44,502,526.25
If the quotient is a whole number, then 4 and 44,502,526.25 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 | 178,010,105 | |
| -1 | 178,010,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 65 | 91 | 455 | 391,231 | 1,956,155 | 2,738,617 | 5,086,003 | 13,693,085 | 25,430,015 | 35,602,021 | 178,010,105 |
| -1 | -5 | -7 | -13 | -35 | -65 | -91 | -455 | -391,231 | -1,956,155 | -2,738,617 | -5,086,003 | -13,693,085 | -25,430,015 | -35,602,021 | -178,010,105 |
Here are some more numbers to try:
Try the factor calculator