A:
Positive:
1 x 1454111155 x 2908222317 x 855359585 x 1710719137 x 1061395685 x 2122792329 x 6243511645 x 12487
Negative:
-1 x -145411115-5 x -29082223-17 x -8553595-85 x -1710719-137 x -1061395-685 x -212279-2329 x -62435-11645 x -12487
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 145,411,115, 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 | 145,411,115 | |
| -1 | -145,411,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 145,411,115.
Example:
1 x 145,411,115 = 145,411,115
and
-1 x -145,411,115 = 145,411,115
Notice both answers equal 145,411,115
With that explanation out of the way, let's continue. Next, we take the number 145,411,115 and divide it by 2:
145,411,115 ÷ 2 = 72,705,557.5
If the quotient is a whole number, then 2 and 72,705,557.5 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 | 145,411,115 | |
| -1 | -145,411,115 |
Now, we try dividing 145,411,115 by 3:
145,411,115 ÷ 3 = 48,470,371.6667
If the quotient is a whole number, then 3 and 48,470,371.6667 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 | 145,411,115 | |
| -1 | -145,411,115 |
Let's try dividing by 4:
145,411,115 ÷ 4 = 36,352,778.75
If the quotient is a whole number, then 4 and 36,352,778.75 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 | 145,411,115 | |
| -1 | 145,411,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 137 | 685 | 2,329 | 11,645 | 12,487 | 62,435 | 212,279 | 1,061,395 | 1,710,719 | 8,553,595 | 29,082,223 | 145,411,115 |
| -1 | -5 | -17 | -85 | -137 | -685 | -2,329 | -11,645 | -12,487 | -62,435 | -212,279 | -1,061,395 | -1,710,719 | -8,553,595 | -29,082,223 | -145,411,115 |
Here are some more numbers to try:
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