Is 405 an abundant number and what is its abundance?

Is 405 an abundant number?

Here we will explain and calculate if 405 is an abundant number and its abundance if applicable.

405 is an abundant number if the sum of its proper divisors is greater than 405.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 9 + 15 + 27 + 45 + 81 + 135 = 321.

321 is not greater than 405. Therefore, 405 is not an abundant number.

The abundance of 405 is the sum of its proper divisors minus 405. Thus, the abundance of 405 is 321 - 405 = no abundance

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