A:
Positive:
1 x 1531315155 x 3062630341 x 373491567 x 2285545205 x 746983335 x 4571092747 x 5574511149 x 13735
Negative:
-1 x -153131515-5 x -30626303-41 x -3734915-67 x -2285545-205 x -746983-335 x -457109-2747 x -55745-11149 x -13735
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 153,131,515, 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 | 153,131,515 | |
| -1 | -153,131,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 153,131,515.
Example:
1 x 153,131,515 = 153,131,515
and
-1 x -153,131,515 = 153,131,515
Notice both answers equal 153,131,515
With that explanation out of the way, let's continue. Next, we take the number 153,131,515 and divide it by 2:
153,131,515 ÷ 2 = 76,565,757.5
If the quotient is a whole number, then 2 and 76,565,757.5 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 | 153,131,515 | |
| -1 | -153,131,515 |
Now, we try dividing 153,131,515 by 3:
153,131,515 ÷ 3 = 51,043,838.3333
If the quotient is a whole number, then 3 and 51,043,838.3333 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 | 153,131,515 | |
| -1 | -153,131,515 |
Let's try dividing by 4:
153,131,515 ÷ 4 = 38,282,878.75
If the quotient is a whole number, then 4 and 38,282,878.75 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 | 153,131,515 | |
| -1 | 153,131,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 67 | 205 | 335 | 2,747 | 11,149 | 13,735 | 55,745 | 457,109 | 746,983 | 2,285,545 | 3,734,915 | 30,626,303 | 153,131,515 |
| -1 | -5 | -41 | -67 | -205 | -335 | -2,747 | -11,149 | -13,735 | -55,745 | -457,109 | -746,983 | -2,285,545 | -3,734,915 | -30,626,303 | -153,131,515 |
Here are some more numbers to try:
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