Is 640 an abundant number and what is its abundance?

Is 640 an abundant number?

Here we will explain and calculate if 640 is an abundant number and its abundance if applicable.

640 is an abundant number if the sum of its proper divisors is greater than 640.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 32 + 40 + 64 + 80 + 128 + 160 + 320 = 890.

890 is greater than 640. Therefore, 640 is an abundant number.

The abundance of 640 is the sum of its proper divisors minus 640. Thus, the abundance of 640 is 890 - 640 = 250

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