A:
Positive:
1 x 1556934897 x 2224192729 x 536874153 x 2937613203 x 766963371 x 419659499 x 312011841 x 1851291537 x 1012973493 x 445735887 x 2644710759 x 14471
Negative:
-1 x -155693489-7 x -22241927-29 x -5368741-53 x -2937613-203 x -766963-371 x -419659-499 x -312011-841 x -185129-1537 x -101297-3493 x -44573-5887 x -26447-10759 x -14471
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 155,693,489, 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 | 155,693,489 | |
| -1 | -155,693,489 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,693,489.
Example:
1 x 155,693,489 = 155,693,489
and
-1 x -155,693,489 = 155,693,489
Notice both answers equal 155,693,489
With that explanation out of the way, let's continue. Next, we take the number 155,693,489 and divide it by 2:
155,693,489 ÷ 2 = 77,846,744.5
If the quotient is a whole number, then 2 and 77,846,744.5 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 | 155,693,489 | |
| -1 | -155,693,489 |
Now, we try dividing 155,693,489 by 3:
155,693,489 ÷ 3 = 51,897,829.6667
If the quotient is a whole number, then 3 and 51,897,829.6667 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 | 155,693,489 | |
| -1 | -155,693,489 |
Let's try dividing by 4:
155,693,489 ÷ 4 = 38,923,372.25
If the quotient is a whole number, then 4 and 38,923,372.25 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 | 155,693,489 | |
| -1 | 155,693,489 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 53 | 203 | 371 | 499 | 841 | 1,537 | 3,493 | 5,887 | 10,759 | 14,471 | 26,447 | 44,573 | 101,297 | 185,129 | 312,011 | 419,659 | 766,963 | 2,937,613 | 5,368,741 | 22,241,927 | 155,693,489 |
| -1 | -7 | -29 | -53 | -203 | -371 | -499 | -841 | -1,537 | -3,493 | -5,887 | -10,759 | -14,471 | -26,447 | -44,573 | -101,297 | -185,129 | -312,011 | -419,659 | -766,963 | -2,937,613 | -5,368,741 | -22,241,927 | -155,693,489 |
Here are some more numbers to try:
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