A:
Positive:
1 x 1959452155 x 39189043131 x 1495765293 x 668755655 x 2991531021 x 1919151465 x 1337515105 x 38383
Negative:
-1 x -195945215-5 x -39189043-131 x -1495765-293 x -668755-655 x -299153-1021 x -191915-1465 x -133751-5105 x -38383
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 195,945,215, 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 | 195,945,215 | |
| -1 | -195,945,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 195,945,215.
Example:
1 x 195,945,215 = 195,945,215
and
-1 x -195,945,215 = 195,945,215
Notice both answers equal 195,945,215
With that explanation out of the way, let's continue. Next, we take the number 195,945,215 and divide it by 2:
195,945,215 ÷ 2 = 97,972,607.5
If the quotient is a whole number, then 2 and 97,972,607.5 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 | 195,945,215 | |
| -1 | -195,945,215 |
Now, we try dividing 195,945,215 by 3:
195,945,215 ÷ 3 = 65,315,071.6667
If the quotient is a whole number, then 3 and 65,315,071.6667 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 | 195,945,215 | |
| -1 | -195,945,215 |
Let's try dividing by 4:
195,945,215 ÷ 4 = 48,986,303.75
If the quotient is a whole number, then 4 and 48,986,303.75 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 | 195,945,215 | |
| -1 | 195,945,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 131 | 293 | 655 | 1,021 | 1,465 | 5,105 | 38,383 | 133,751 | 191,915 | 299,153 | 668,755 | 1,495,765 | 39,189,043 | 195,945,215 |
| -1 | -5 | -131 | -293 | -655 | -1,021 | -1,465 | -5,105 | -38,383 | -133,751 | -191,915 | -299,153 | -668,755 | -1,495,765 | -39,189,043 | -195,945,215 |
Here are some more numbers to try:
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