A:
Positive:
1 x 1540516455 x 3081032911 x 1400469555 x 2800939107 x 1439735535 x 2879471177 x 1308855885 x 26177
Negative:
-1 x -154051645-5 x -30810329-11 x -14004695-55 x -2800939-107 x -1439735-535 x -287947-1177 x -130885-5885 x -26177
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 154,051,645, 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 | 154,051,645 | |
| -1 | -154,051,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 154,051,645.
Example:
1 x 154,051,645 = 154,051,645
and
-1 x -154,051,645 = 154,051,645
Notice both answers equal 154,051,645
With that explanation out of the way, let's continue. Next, we take the number 154,051,645 and divide it by 2:
154,051,645 ÷ 2 = 77,025,822.5
If the quotient is a whole number, then 2 and 77,025,822.5 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 | 154,051,645 | |
| -1 | -154,051,645 |
Now, we try dividing 154,051,645 by 3:
154,051,645 ÷ 3 = 51,350,548.3333
If the quotient is a whole number, then 3 and 51,350,548.3333 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 | 154,051,645 | |
| -1 | -154,051,645 |
Let's try dividing by 4:
154,051,645 ÷ 4 = 38,512,911.25
If the quotient is a whole number, then 4 and 38,512,911.25 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 | 154,051,645 | |
| -1 | 154,051,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 107 | 535 | 1,177 | 5,885 | 26,177 | 130,885 | 287,947 | 1,439,735 | 2,800,939 | 14,004,695 | 30,810,329 | 154,051,645 |
| -1 | -5 | -11 | -55 | -107 | -535 | -1,177 | -5,885 | -26,177 | -130,885 | -287,947 | -1,439,735 | -2,800,939 | -14,004,695 | -30,810,329 | -154,051,645 |
Here are some more numbers to try:
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