A:
Positive:
1 x 1553614797 x 2219449713 x 1195088379 x 196660191 x 1707269553 x 2809431027 x 1512777189 x 21611
Negative:
-1 x -155361479-7 x -22194497-13 x -11950883-79 x -1966601-91 x -1707269-553 x -280943-1027 x -151277-7189 x -21611
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 155,361,479, 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 | 155,361,479 | |
| -1 | -155,361,479 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,361,479.
Example:
1 x 155,361,479 = 155,361,479
and
-1 x -155,361,479 = 155,361,479
Notice both answers equal 155,361,479
With that explanation out of the way, let's continue. Next, we take the number 155,361,479 and divide it by 2:
155,361,479 ÷ 2 = 77,680,739.5
If the quotient is a whole number, then 2 and 77,680,739.5 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 | 155,361,479 | |
| -1 | -155,361,479 |
Now, we try dividing 155,361,479 by 3:
155,361,479 ÷ 3 = 51,787,159.6667
If the quotient is a whole number, then 3 and 51,787,159.6667 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 | 155,361,479 | |
| -1 | -155,361,479 |
Let's try dividing by 4:
155,361,479 ÷ 4 = 38,840,369.75
If the quotient is a whole number, then 4 and 38,840,369.75 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 | 155,361,479 | |
| -1 | 155,361,479 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 79 | 91 | 553 | 1,027 | 7,189 | 21,611 | 151,277 | 280,943 | 1,707,269 | 1,966,601 | 11,950,883 | 22,194,497 | 155,361,479 |
| -1 | -7 | -13 | -79 | -91 | -553 | -1,027 | -7,189 | -21,611 | -151,277 | -280,943 | -1,707,269 | -1,966,601 | -11,950,883 | -22,194,497 | -155,361,479 |
Here are some more numbers to try:
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