A:
Positive:
1 x 15545515711 x 1413228713 x 1195808917 x 9144421143 x 1087099169 x 919853187 x 831311221 x 7034171859 x 836232431 x 639472873 x 541094919 x 31603
Negative:
-1 x -155455157-11 x -14132287-13 x -11958089-17 x -9144421-143 x -1087099-169 x -919853-187 x -831311-221 x -703417-1859 x -83623-2431 x -63947-2873 x -54109-4919 x -31603
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 155,455,157, 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 | 155,455,157 | |
| -1 | -155,455,157 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,455,157.
Example:
1 x 155,455,157 = 155,455,157
and
-1 x -155,455,157 = 155,455,157
Notice both answers equal 155,455,157
With that explanation out of the way, let's continue. Next, we take the number 155,455,157 and divide it by 2:
155,455,157 ÷ 2 = 77,727,578.5
If the quotient is a whole number, then 2 and 77,727,578.5 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 | 155,455,157 | |
| -1 | -155,455,157 |
Now, we try dividing 155,455,157 by 3:
155,455,157 ÷ 3 = 51,818,385.6667
If the quotient is a whole number, then 3 and 51,818,385.6667 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 | 155,455,157 | |
| -1 | -155,455,157 |
Let's try dividing by 4:
155,455,157 ÷ 4 = 38,863,789.25
If the quotient is a whole number, then 4 and 38,863,789.25 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 | 155,455,157 | |
| -1 | 155,455,157 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 17 | 143 | 169 | 187 | 221 | 1,859 | 2,431 | 2,873 | 4,919 | 31,603 | 54,109 | 63,947 | 83,623 | 703,417 | 831,311 | 919,853 | 1,087,099 | 9,144,421 | 11,958,089 | 14,132,287 | 155,455,157 |
| -1 | -11 | -13 | -17 | -143 | -169 | -187 | -221 | -1,859 | -2,431 | -2,873 | -4,919 | -31,603 | -54,109 | -63,947 | -83,623 | -703,417 | -831,311 | -919,853 | -1,087,099 | -9,144,421 | -11,958,089 | -14,132,287 | -155,455,157 |
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