A:
Positive:
1 x 15536049111 x 1412368113 x 11950807121 x 1283971143 x 1086437283 x 548977349 x 4451591573 x 987673113 x 499073679 x 422293839 x 404694537 x 34243
Negative:
-1 x -155360491-11 x -14123681-13 x -11950807-121 x -1283971-143 x -1086437-283 x -548977-349 x -445159-1573 x -98767-3113 x -49907-3679 x -42229-3839 x -40469-4537 x -34243
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 155,360,491, 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 | 155,360,491 | |
| -1 | -155,360,491 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,360,491.
Example:
1 x 155,360,491 = 155,360,491
and
-1 x -155,360,491 = 155,360,491
Notice both answers equal 155,360,491
With that explanation out of the way, let's continue. Next, we take the number 155,360,491 and divide it by 2:
155,360,491 ÷ 2 = 77,680,245.5
If the quotient is a whole number, then 2 and 77,680,245.5 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 | 155,360,491 | |
| -1 | -155,360,491 |
Now, we try dividing 155,360,491 by 3:
155,360,491 ÷ 3 = 51,786,830.3333
If the quotient is a whole number, then 3 and 51,786,830.3333 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 | 155,360,491 | |
| -1 | -155,360,491 |
Let's try dividing by 4:
155,360,491 ÷ 4 = 38,840,122.75
If the quotient is a whole number, then 4 and 38,840,122.75 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 | 155,360,491 | |
| -1 | 155,360,491 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 121 | 143 | 283 | 349 | 1,573 | 3,113 | 3,679 | 3,839 | 4,537 | 34,243 | 40,469 | 42,229 | 49,907 | 98,767 | 445,159 | 548,977 | 1,086,437 | 1,283,971 | 11,950,807 | 14,123,681 | 155,360,491 |
| -1 | -11 | -13 | -121 | -143 | -283 | -349 | -1,573 | -3,113 | -3,679 | -3,839 | -4,537 | -34,243 | -40,469 | -42,229 | -49,907 | -98,767 | -445,159 | -548,977 | -1,086,437 | -1,283,971 | -11,950,807 | -14,123,681 | -155,360,491 |
Here are some more numbers to try:
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