Is 280 an abundant number and what is its abundance?

Is 280 an abundant number?

Here we will explain and calculate if 280 is an abundant number and its abundance if applicable.

280 is an abundant number if the sum of its proper divisors is greater than 280.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 7 + 8 + 10 + 14 + 20 + 28 + 35 + 40 + 56 + 70 + 140 = 440.

440 is greater than 280. Therefore, 280 is an abundant number.

The abundance of 280 is the sum of its proper divisors minus 280. Thus, the abundance of 280 is 440 - 280 = 160

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