21073982

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{1993}}^1$

素因数の和:2323

約数の個数: 16

約数和(自身を含む): 33594912

約数和(自身を除く): 12520930

約数列:

[1, 2, 17, 34, 311, 622, 1993, 3986, 5287, 10574, 33881, 67762, 619823, 1239646, 10536991, 21073982]

約数ペア:

[(1, 21073982), (2, 10536991), (17, 1239646), (34, 619823), (311, 67762), (622, 33881), (1993, 10574), (3986, 5287)]