20843992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 23508008

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 59, 79, 86, 104, 118, 158, 172, 236, 316, 344, 472, 559, 632, 767, 1027, 1118, 1534, 2054, 2236, 2537, 3068, 3397, 4108, 4472, 4661, 5074, 6136, 6794, 8216, 9322, 10148, 13588, 18644, 20296, 27176, 32981, 37288, 44161, 60593, 65962, 88322, 121186, 131924, 176644, 200423, 242372, 263848, 353288, 400846, 484744, 801692, 1603384, 2605499, 5210998, 10421996, 20843992]

約数ペア:

[(1, 20843992), (2, 10421996), (4, 5210998), (8, 2605499), (13, 1603384), (26, 801692), (43, 484744), (52, 400846), (59, 353288), (79, 263848), (86, 242372), (104, 200423), (118, 176644), (158, 131924), (172, 121186), (236, 88322), (316, 65962), (344, 60593), (472, 44161), (559, 37288), (632, 32981), (767, 27176), (1027, 20296), (1118, 18644), (1534, 13588), (2054, 10148), (2236, 9322), (2537, 8216), (3068, 6794), (3397, 6136), (4108, 5074), (4472, 4661)]