A:
Positive:
1 x 15301539729 x 527639383 x 1843559151 x 1013347421 x 3634572407 x 635714379 x 3494312209 x 12533
Negative:
-1 x -153015397-29 x -5276393-83 x -1843559-151 x -1013347-421 x -363457-2407 x -63571-4379 x -34943-12209 x -12533
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 153,015,397, 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 | 153,015,397 | |
| -1 | -153,015,397 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 153,015,397.
Example:
1 x 153,015,397 = 153,015,397
and
-1 x -153,015,397 = 153,015,397
Notice both answers equal 153,015,397
With that explanation out of the way, let's continue. Next, we take the number 153,015,397 and divide it by 2:
153,015,397 ÷ 2 = 76,507,698.5
If the quotient is a whole number, then 2 and 76,507,698.5 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 | 153,015,397 | |
| -1 | -153,015,397 |
Now, we try dividing 153,015,397 by 3:
153,015,397 ÷ 3 = 51,005,132.3333
If the quotient is a whole number, then 3 and 51,005,132.3333 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 | 153,015,397 | |
| -1 | -153,015,397 |
Let's try dividing by 4:
153,015,397 ÷ 4 = 38,253,849.25
If the quotient is a whole number, then 4 and 38,253,849.25 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 | 153,015,397 | |
| -1 | 153,015,397 |
If you did it right, you will end up with this table:
| 1 | 29 | 83 | 151 | 421 | 2,407 | 4,379 | 12,209 | 12,533 | 34,943 | 63,571 | 363,457 | 1,013,347 | 1,843,559 | 5,276,393 | 153,015,397 |
| -1 | -29 | -83 | -151 | -421 | -2,407 | -4,379 | -12,209 | -12,533 | -34,943 | -63,571 | -363,457 | -1,013,347 | -1,843,559 | -5,276,393 | -153,015,397 |
Here are some more numbers to try:
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