A:
Positive:
1 x 15524514723 x 674978941 x 3786467193 x 804379853 x 181999943 x 1646294439 x 349737913 x 19619
Negative:
-1 x -155245147-23 x -6749789-41 x -3786467-193 x -804379-853 x -181999-943 x -164629-4439 x -34973-7913 x -19619
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 155,245,147, 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 | 155,245,147 | |
| -1 | -155,245,147 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,245,147.
Example:
1 x 155,245,147 = 155,245,147
and
-1 x -155,245,147 = 155,245,147
Notice both answers equal 155,245,147
With that explanation out of the way, let's continue. Next, we take the number 155,245,147 and divide it by 2:
155,245,147 ÷ 2 = 77,622,573.5
If the quotient is a whole number, then 2 and 77,622,573.5 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 | 155,245,147 | |
| -1 | -155,245,147 |
Now, we try dividing 155,245,147 by 3:
155,245,147 ÷ 3 = 51,748,382.3333
If the quotient is a whole number, then 3 and 51,748,382.3333 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 | 155,245,147 | |
| -1 | -155,245,147 |
Let's try dividing by 4:
155,245,147 ÷ 4 = 38,811,286.75
If the quotient is a whole number, then 4 and 38,811,286.75 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 | 155,245,147 | |
| -1 | 155,245,147 |
If you did it right, you will end up with this table:
| 1 | 23 | 41 | 193 | 853 | 943 | 4,439 | 7,913 | 19,619 | 34,973 | 164,629 | 181,999 | 804,379 | 3,786,467 | 6,749,789 | 155,245,147 |
| -1 | -23 | -41 | -193 | -853 | -943 | -4,439 | -7,913 | -19,619 | -34,973 | -164,629 | -181,999 | -804,379 | -3,786,467 | -6,749,789 | -155,245,147 |
Here are some more numbers to try:
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