A:
Positive:
1 x 2604253855 x 5208507711 x 2367503555 x 47350071523 x 1709953109 x 837657615 x 3419915545 x 16753
Negative:
-1 x -260425385-5 x -52085077-11 x -23675035-55 x -4735007-1523 x -170995-3109 x -83765-7615 x -34199-15545 x -16753
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 260,425,385, 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 | 260,425,385 | |
| -1 | -260,425,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 260,425,385.
Example:
1 x 260,425,385 = 260,425,385
and
-1 x -260,425,385 = 260,425,385
Notice both answers equal 260,425,385
With that explanation out of the way, let's continue. Next, we take the number 260,425,385 and divide it by 2:
260,425,385 ÷ 2 = 130,212,692.5
If the quotient is a whole number, then 2 and 130,212,692.5 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 | 260,425,385 | |
| -1 | -260,425,385 |
Now, we try dividing 260,425,385 by 3:
260,425,385 ÷ 3 = 86,808,461.6667
If the quotient is a whole number, then 3 and 86,808,461.6667 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 | 260,425,385 | |
| -1 | -260,425,385 |
Let's try dividing by 4:
260,425,385 ÷ 4 = 65,106,346.25
If the quotient is a whole number, then 4 and 65,106,346.25 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 | 260,425,385 | |
| -1 | 260,425,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 1,523 | 3,109 | 7,615 | 15,545 | 16,753 | 34,199 | 83,765 | 170,995 | 4,735,007 | 23,675,035 | 52,085,077 | 260,425,385 |
| -1 | -5 | -11 | -55 | -1,523 | -3,109 | -7,615 | -15,545 | -16,753 | -34,199 | -83,765 | -170,995 | -4,735,007 | -23,675,035 | -52,085,077 | -260,425,385 |
Here are some more numbers to try:
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