20578284

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:919

約数の個数: 72

約数和(自身を含む): 56216160

約数和(自身を除く): 35637876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 29, 36, 46, 58, 69, 87, 92, 116, 138, 174, 207, 261, 276, 348, 414, 522, 667, 828, 857, 1044, 1334, 1714, 2001, 2571, 2668, 3428, 4002, 5142, 6003, 7713, 8004, 10284, 12006, 15426, 19711, 24012, 24853, 30852, 39422, 49706, 59133, 74559, 78844, 99412, 118266, 149118, 177399, 223677, 236532, 298236, 354798, 447354, 571619, 709596, 894708, 1143238, 1714857, 2286476, 3429714, 5144571, 6859428, 10289142, 20578284]

約数ペア:

[(1, 20578284), (2, 10289142), (3, 6859428), (4, 5144571), (6, 3429714), (9, 2286476), (12, 1714857), (18, 1143238), (23, 894708), (29, 709596), (36, 571619), (46, 447354), (58, 354798), (69, 298236), (87, 236532), (92, 223677), (116, 177399), (138, 149118), (174, 118266), (207, 99412), (261, 78844), (276, 74559), (348, 59133), (414, 49706), (522, 39422), (667, 30852), (828, 24853), (857, 24012), (1044, 19711), (1334, 15426), (1714, 12006), (2001, 10284), (2571, 8004), (2668, 7713), (3428, 6003), (4002, 5142)]