A:
Positive:
1 x 1661034255 x 3322068525 x 664413731 x 535817579 x 2102575155 x 1071635395 x 420515775 x 2143271975 x 841032449 x 678252713 x 6122512245 x 13565
Negative:
-1 x -166103425-5 x -33220685-25 x -6644137-31 x -5358175-79 x -2102575-155 x -1071635-395 x -420515-775 x -214327-1975 x -84103-2449 x -67825-2713 x -61225-12245 x -13565
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 166,103,425, 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 | 166,103,425 | |
| -1 | -166,103,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,103,425.
Example:
1 x 166,103,425 = 166,103,425
and
-1 x -166,103,425 = 166,103,425
Notice both answers equal 166,103,425
With that explanation out of the way, let's continue. Next, we take the number 166,103,425 and divide it by 2:
166,103,425 ÷ 2 = 83,051,712.5
If the quotient is a whole number, then 2 and 83,051,712.5 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 | 166,103,425 | |
| -1 | -166,103,425 |
Now, we try dividing 166,103,425 by 3:
166,103,425 ÷ 3 = 55,367,808.3333
If the quotient is a whole number, then 3 and 55,367,808.3333 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 | 166,103,425 | |
| -1 | -166,103,425 |
Let's try dividing by 4:
166,103,425 ÷ 4 = 41,525,856.25
If the quotient is a whole number, then 4 and 41,525,856.25 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 | 166,103,425 | |
| -1 | 166,103,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 79 | 155 | 395 | 775 | 1,975 | 2,449 | 2,713 | 12,245 | 13,565 | 61,225 | 67,825 | 84,103 | 214,327 | 420,515 | 1,071,635 | 2,102,575 | 5,358,175 | 6,644,137 | 33,220,685 | 166,103,425 |
| -1 | -5 | -25 | -31 | -79 | -155 | -395 | -775 | -1,975 | -2,449 | -2,713 | -12,245 | -13,565 | -61,225 | -67,825 | -84,103 | -214,327 | -420,515 | -1,071,635 | -2,102,575 | -5,358,175 | -6,644,137 | -33,220,685 | -166,103,425 |
Here are some more numbers to try:
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