A:
Positive:
1 x 1015402155 x 203080437 x 1450574535 x 29011491373 x 739552113 x 480556865 x 147919611 x 10565
Negative:
-1 x -101540215-5 x -20308043-7 x -14505745-35 x -2901149-1373 x -73955-2113 x -48055-6865 x -14791-9611 x -10565
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 101,540,215, 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 | 101,540,215 | |
| -1 | -101,540,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 101,540,215.
Example:
1 x 101,540,215 = 101,540,215
and
-1 x -101,540,215 = 101,540,215
Notice both answers equal 101,540,215
With that explanation out of the way, let's continue. Next, we take the number 101,540,215 and divide it by 2:
101,540,215 ÷ 2 = 50,770,107.5
If the quotient is a whole number, then 2 and 50,770,107.5 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 | 101,540,215 | |
| -1 | -101,540,215 |
Now, we try dividing 101,540,215 by 3:
101,540,215 ÷ 3 = 33,846,738.3333
If the quotient is a whole number, then 3 and 33,846,738.3333 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 | 101,540,215 | |
| -1 | -101,540,215 |
Let's try dividing by 4:
101,540,215 ÷ 4 = 25,385,053.75
If the quotient is a whole number, then 4 and 25,385,053.75 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 | 101,540,215 | |
| -1 | 101,540,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 1,373 | 2,113 | 6,865 | 9,611 | 10,565 | 14,791 | 48,055 | 73,955 | 2,901,149 | 14,505,745 | 20,308,043 | 101,540,215 |
| -1 | -5 | -7 | -35 | -1,373 | -2,113 | -6,865 | -9,611 | -10,565 | -14,791 | -48,055 | -73,955 | -2,901,149 | -14,505,745 | -20,308,043 | -101,540,215 |
Here are some more numbers to try:
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