Is 3640 a deficient number and what is its deficiency?

Is 3640 a deficient number?

Here we will explain and calculate if 3640 is a deficient number and its deficiency if applicable.

3640 is a deficient number if the sum of its proper divisors is less than 3640.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 7 + 8 + 10 + 13 + 14 + 20 + 26 + 28 + 35 + 40 + 52 + 56 + 65 + 70 + 91 + 104 + 130 + 140 + 182 + 260 + 280 + 364 + 455 + 520 + 728 + 910 + 1820 = 6440.

6440 is not less than 3640. Therefore, 3640 is not a deficient number.

The deficiency of 3640 is 3640 minus the sum of its proper divisors. Thus, the deficiency of 3640 is 3640 - 6440 = No Deficiency

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