A:
Positive:
1 x 1025404255 x 2050808513 x 788772525 x 410161753 x 193472565 x 1577545265 x 386945325 x 315509689 x 1488251325 x 773893445 x 297655953 x 17225
Negative:
-1 x -102540425-5 x -20508085-13 x -7887725-25 x -4101617-53 x -1934725-65 x -1577545-265 x -386945-325 x -315509-689 x -148825-1325 x -77389-3445 x -29765-5953 x -17225
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 102,540,425, 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 | 102,540,425 | |
| -1 | -102,540,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 102,540,425.
Example:
1 x 102,540,425 = 102,540,425
and
-1 x -102,540,425 = 102,540,425
Notice both answers equal 102,540,425
With that explanation out of the way, let's continue. Next, we take the number 102,540,425 and divide it by 2:
102,540,425 ÷ 2 = 51,270,212.5
If the quotient is a whole number, then 2 and 51,270,212.5 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 | 102,540,425 | |
| -1 | -102,540,425 |
Now, we try dividing 102,540,425 by 3:
102,540,425 ÷ 3 = 34,180,141.6667
If the quotient is a whole number, then 3 and 34,180,141.6667 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 | 102,540,425 | |
| -1 | -102,540,425 |
Let's try dividing by 4:
102,540,425 ÷ 4 = 25,635,106.25
If the quotient is a whole number, then 4 and 25,635,106.25 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 | 102,540,425 | |
| -1 | 102,540,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 53 | 65 | 265 | 325 | 689 | 1,325 | 3,445 | 5,953 | 17,225 | 29,765 | 77,389 | 148,825 | 315,509 | 386,945 | 1,577,545 | 1,934,725 | 4,101,617 | 7,887,725 | 20,508,085 | 102,540,425 |
| -1 | -5 | -13 | -25 | -53 | -65 | -265 | -325 | -689 | -1,325 | -3,445 | -5,953 | -17,225 | -29,765 | -77,389 | -148,825 | -315,509 | -386,945 | -1,577,545 | -1,934,725 | -4,101,617 | -7,887,725 | -20,508,085 | -102,540,425 |
Here are some more numbers to try:
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