A:
Positive:
1 x 1552351255 x 3104702525 x 620940547 x 3302875125 x 1241881235 x 6605751175 x 1321155875 x 26423
Negative:
-1 x -155235125-5 x -31047025-25 x -6209405-47 x -3302875-125 x -1241881-235 x -660575-1175 x -132115-5875 x -26423
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 155,235,125, 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 | 155,235,125 | |
| -1 | -155,235,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,235,125.
Example:
1 x 155,235,125 = 155,235,125
and
-1 x -155,235,125 = 155,235,125
Notice both answers equal 155,235,125
With that explanation out of the way, let's continue. Next, we take the number 155,235,125 and divide it by 2:
155,235,125 ÷ 2 = 77,617,562.5
If the quotient is a whole number, then 2 and 77,617,562.5 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 | 155,235,125 | |
| -1 | -155,235,125 |
Now, we try dividing 155,235,125 by 3:
155,235,125 ÷ 3 = 51,745,041.6667
If the quotient is a whole number, then 3 and 51,745,041.6667 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 | 155,235,125 | |
| -1 | -155,235,125 |
Let's try dividing by 4:
155,235,125 ÷ 4 = 38,808,781.25
If the quotient is a whole number, then 4 and 38,808,781.25 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 | 155,235,125 | |
| -1 | 155,235,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 47 | 125 | 235 | 1,175 | 5,875 | 26,423 | 132,115 | 660,575 | 1,241,881 | 3,302,875 | 6,209,405 | 31,047,025 | 155,235,125 |
| -1 | -5 | -25 | -47 | -125 | -235 | -1,175 | -5,875 | -26,423 | -132,115 | -660,575 | -1,241,881 | -3,302,875 | -6,209,405 | -31,047,025 | -155,235,125 |
Here are some more numbers to try:
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