21238156784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1471}}^1\times {\mathrm{1693}}^1$

素因数の和:3226

約数の個数: 80

約数和(自身を含む): 45452757504

約数和(自身を除く): 24214600720

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 1471, 1693, 2132, 2942, 3386, 4264, 5884, 6772, 8528, 11768, 13544, 19123, 22009, 23536, 27088, 38246, 44018, 60311, 69413, 76492, 88036, 120622, 138826, 152984, 176072, 241244, 277652, 305968, 352144, 482488, 555304, 784043, 902369, 964976, 1110608, 1568086, 1804738, 2490403, 3136172, 3609476, 4980806, 6272344, 7218952, 9961612, 12544688, 14437904, 19923224, 32375239, 39846448, 64750478, 102106523, 129500956, 204213046, 259001912, 408426092, 518003824, 816852184, 1327384799, 1633704368, 2654769598, 5309539196, 10619078392, 21238156784]

約数ペア:

[(1, 21238156784), (2, 10619078392), (4, 5309539196), (8, 2654769598), (13, 1633704368), (16, 1327384799), (26, 816852184), (41, 518003824), (52, 408426092), (82, 259001912), (104, 204213046), (164, 129500956), (208, 102106523), (328, 64750478), (533, 39846448), (656, 32375239), (1066, 19923224), (1471, 14437904), (1693, 12544688), (2132, 9961612), (2942, 7218952), (3386, 6272344), (4264, 4980806), (5884, 3609476), (6772, 3136172), (8528, 2490403), (11768, 1804738), (13544, 1568086), (19123, 1110608), (22009, 964976), (23536, 902369), (27088, 784043), (38246, 555304), (44018, 482488), (60311, 352144), (69413, 305968), (76492, 277652), (88036, 241244), (120622, 176072), (138826, 152984)]