A:
Positive:
1 x 1553405455 x 3106810971 x 2187895355 x 437579467 x 332635937 x 1657852335 x 665274685 x 33157
Negative:
-1 x -155340545-5 x -31068109-71 x -2187895-355 x -437579-467 x -332635-937 x -165785-2335 x -66527-4685 x -33157
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 155,340,545, 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 | 155,340,545 | |
| -1 | -155,340,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,340,545.
Example:
1 x 155,340,545 = 155,340,545
and
-1 x -155,340,545 = 155,340,545
Notice both answers equal 155,340,545
With that explanation out of the way, let's continue. Next, we take the number 155,340,545 and divide it by 2:
155,340,545 ÷ 2 = 77,670,272.5
If the quotient is a whole number, then 2 and 77,670,272.5 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 | 155,340,545 | |
| -1 | -155,340,545 |
Now, we try dividing 155,340,545 by 3:
155,340,545 ÷ 3 = 51,780,181.6667
If the quotient is a whole number, then 3 and 51,780,181.6667 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 | 155,340,545 | |
| -1 | -155,340,545 |
Let's try dividing by 4:
155,340,545 ÷ 4 = 38,835,136.25
If the quotient is a whole number, then 4 and 38,835,136.25 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 | 155,340,545 | |
| -1 | 155,340,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 71 | 355 | 467 | 937 | 2,335 | 4,685 | 33,157 | 66,527 | 165,785 | 332,635 | 437,579 | 2,187,895 | 31,068,109 | 155,340,545 |
| -1 | -5 | -71 | -355 | -467 | -937 | -2,335 | -4,685 | -33,157 | -66,527 | -165,785 | -332,635 | -437,579 | -2,187,895 | -31,068,109 | -155,340,545 |
Here are some more numbers to try:
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