18811520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 256

約数和(自身を含む): 61689600

約数和(自身を除く): 42878080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 17, 19, 20, 26, 28, 32, 34, 35, 38, 40, 52, 56, 64, 65, 68, 70, 76, 80, 85, 91, 95, 104, 112, 119, 128, 130, 133, 136, 140, 152, 160, 170, 182, 190, 208, 221, 224, 238, 247, 260, 266, 272, 280, 304, 320, 323, 340, 364, 380, 416, 442, 448, 455, 476, 494, 520, 532, 544, 560, 595, 608, 640, 646, 665, 680, 728, 760, 832, 884, 896, 910, 952, 988, 1040, 1064, 1088, 1105, 1120, 1190, 1216, 1235, 1292, 1330, 1360, 1456, 1520, 1547, 1615, 1664, 1729, 1768, 1820, 1904, 1976, 2080, 2128, 2176, 2210, 2240, 2261, 2380, 2432, 2470, 2584, 2660, 2720, 2912, 3040, 3094, 3230, 3458, 3536, 3640, 3808, 3952, 4160, 4199, 4256, 4420, 4480, 4522, 4760, 4940, 5168, 5320, 5440, 5824, 6080, 6188, 6460, 6916, 7072, 7280, 7616, 7735, 7904, 8320, 8398, 8512, 8645, 8840, 9044, 9520, 9880, 10336, 10640, 10880, 11305, 11648, 12160, 12376, 12920, 13832, 14144, 14560, 15232, 15470, 15808, 16796, 17024, 17290, 17680, 18088, 19040, 19760, 20672, 20995, 21280, 22610, 24752, 25840, 27664, 28288, 29120, 29393, 30940, 31616, 33592, 34580, 35360, 36176, 38080, 39520, 41344, 41990, 42560, 45220, 49504, 51680, 55328, 58240, 58786, 61880, 67184, 69160, 70720, 72352, 76160, 79040, 83980, 85120, 90440, 99008, 103360, 110656, 117572, 123760, 134368, 138320, 141440, 144704, 146965, 158080, 167960, 180880, 198016, 206720, 221312, 235144, 247520, 268736, 276640, 289408, 293930, 335920, 361760, 470288, 495040, 537472, 553280, 587860, 671840, 723520, 940576, 990080, 1106560, 1175720, 1343680, 1447040, 1881152, 2351440, 2687360, 3762304, 4702880, 9405760, 18811520]

約数ペア:

[(1, 18811520), (2, 9405760), (4, 4702880), (5, 3762304), (7, 2687360), (8, 2351440), (10, 1881152), (13, 1447040), (14, 1343680), (16, 1175720), (17, 1106560), (19, 990080), (20, 940576), (26, 723520), (28, 671840), (32, 587860), (34, 553280), (35, 537472), (38, 495040), (40, 470288), (52, 361760), (56, 335920), (64, 293930), (65, 289408), (68, 276640), (70, 268736), (76, 247520), (80, 235144), (85, 221312), (91, 206720), (95, 198016), (104, 180880), (112, 167960), (119, 158080), (128, 146965), (130, 144704), (133, 141440), (136, 138320), (140, 134368), (152, 123760), (160, 117572), (170, 110656), (182, 103360), (190, 99008), (208, 90440), (221, 85120), (224, 83980), (238, 79040), (247, 76160), (260, 72352), (266, 70720), (272, 69160), (280, 67184), (304, 61880), (320, 58786), (323, 58240), (340, 55328), (364, 51680), (380, 49504), (416, 45220), (442, 42560), (448, 41990), (455, 41344), (476, 39520), (494, 38080), (520, 36176), (532, 35360), (544, 34580), (560, 33592), (595, 31616), (608, 30940), (640, 29393), (646, 29120), (665, 28288), (680, 27664), (728, 25840), (760, 24752), (832, 22610), (884, 21280), (896, 20995), (910, 20672), (952, 19760), (988, 19040), (1040, 18088), (1064, 17680), (1088, 17290), (1105, 17024), (1120, 16796), (1190, 15808), (1216, 15470), (1235, 15232), (1292, 14560), (1330, 14144), (1360, 13832), (1456, 12920), (1520, 12376), (1547, 12160), (1615, 11648), (1664, 11305), (1729, 10880), (1768, 10640), (1820, 10336), (1904, 9880), (1976, 9520), (2080, 9044), (2128, 8840), (2176, 8645), (2210, 8512), (2240, 8398), (2261, 8320), (2380, 7904), (2432, 7735), (2470, 7616), (2584, 7280), (2660, 7072), (2720, 6916), (2912, 6460), (3040, 6188), (3094, 6080), (3230, 5824), (3458, 5440), (3536, 5320), (3640, 5168), (3808, 4940), (3952, 4760), (4160, 4522), (4199, 4480), (4256, 4420)]