A:
Positive:
1 x 1451534155 x 2903068311 x 1319576555 x 263915379 x 1837385121 x 1199615395 x 367477605 x 239923869 x 1670353037 x 477954345 x 334079559 x 15185
Negative:
-1 x -145153415-5 x -29030683-11 x -13195765-55 x -2639153-79 x -1837385-121 x -1199615-395 x -367477-605 x -239923-869 x -167035-3037 x -47795-4345 x -33407-9559 x -15185
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 145,153,415, 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 | 145,153,415 | |
| -1 | -145,153,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 145,153,415.
Example:
1 x 145,153,415 = 145,153,415
and
-1 x -145,153,415 = 145,153,415
Notice both answers equal 145,153,415
With that explanation out of the way, let's continue. Next, we take the number 145,153,415 and divide it by 2:
145,153,415 ÷ 2 = 72,576,707.5
If the quotient is a whole number, then 2 and 72,576,707.5 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 | 145,153,415 | |
| -1 | -145,153,415 |
Now, we try dividing 145,153,415 by 3:
145,153,415 ÷ 3 = 48,384,471.6667
If the quotient is a whole number, then 3 and 48,384,471.6667 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 | 145,153,415 | |
| -1 | -145,153,415 |
Let's try dividing by 4:
145,153,415 ÷ 4 = 36,288,353.75
If the quotient is a whole number, then 4 and 36,288,353.75 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 | 145,153,415 | |
| -1 | 145,153,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 79 | 121 | 395 | 605 | 869 | 3,037 | 4,345 | 9,559 | 15,185 | 33,407 | 47,795 | 167,035 | 239,923 | 367,477 | 1,199,615 | 1,837,385 | 2,639,153 | 13,195,765 | 29,030,683 | 145,153,415 |
| -1 | -5 | -11 | -55 | -79 | -121 | -395 | -605 | -869 | -3,037 | -4,345 | -9,559 | -15,185 | -33,407 | -47,795 | -167,035 | -239,923 | -367,477 | -1,199,615 | -1,837,385 | -2,639,153 | -13,195,765 | -29,030,683 | -145,153,415 |
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