18886987184

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{31193}}^1$

素因数の和:31326

約数の個数: 80

約数和(自身を含む): 40939504704

約数和(自身を除く): 22052517520

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 71, 82, 104, 142, 164, 208, 284, 328, 533, 568, 656, 923, 1066, 1136, 1846, 2132, 2911, 3692, 4264, 5822, 7384, 8528, 11644, 14768, 23288, 31193, 37843, 46576, 62386, 75686, 124772, 151372, 249544, 302744, 405509, 499088, 605488, 811018, 1278913, 1622036, 2214703, 2557826, 3244072, 4429406, 5115652, 6488144, 8858812, 10231304, 16625869, 17717624, 20462608, 28791139, 33251738, 35435248, 57582278, 66503476, 90802823, 115164556, 133006952, 181605646, 230329112, 266013904, 363211292, 460658224, 726422584, 1180436699, 1452845168, 2360873398, 4721746796, 9443493592, 18886987184]

約数ペア:

[(1, 18886987184), (2, 9443493592), (4, 4721746796), (8, 2360873398), (13, 1452845168), (16, 1180436699), (26, 726422584), (41, 460658224), (52, 363211292), (71, 266013904), (82, 230329112), (104, 181605646), (142, 133006952), (164, 115164556), (208, 90802823), (284, 66503476), (328, 57582278), (533, 35435248), (568, 33251738), (656, 28791139), (923, 20462608), (1066, 17717624), (1136, 16625869), (1846, 10231304), (2132, 8858812), (2911, 6488144), (3692, 5115652), (4264, 4429406), (5822, 3244072), (7384, 2557826), (8528, 2214703), (11644, 1622036), (14768, 1278913), (23288, 811018), (31193, 605488), (37843, 499088), (46576, 405509), (62386, 302744), (75686, 249544), (124772, 151372)]