21117176

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10271}}^1$

素因数の和:10534

約数の個数: 16

約数和(自身を含む): 39752640

約数和(自身を除く): 18635464

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10271, 20542, 41084, 82168, 2639647, 5279294, 10558588, 21117176]

約数ペア:

[(1, 21117176), (2, 10558588), (4, 5279294), (8, 2639647), (257, 82168), (514, 41084), (1028, 20542), (2056, 10271)]