20508568

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{811}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 40194000

約数和(自身を除く): 19685432

約数列:

[1, 2, 4, 8, 29, 58, 109, 116, 218, 232, 436, 811, 872, 1622, 3161, 3244, 6322, 6488, 12644, 23519, 25288, 47038, 88399, 94076, 176798, 188152, 353596, 707192, 2563571, 5127142, 10254284, 20508568]

約数ペア:

[(1, 20508568), (2, 10254284), (4, 5127142), (8, 2563571), (29, 707192), (58, 353596), (109, 188152), (116, 176798), (218, 94076), (232, 88399), (436, 47038), (811, 25288), (872, 23519), (1622, 12644), (3161, 6488), (3244, 6322)]