81601920

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:513

約数の個数: 192

約数和(自身を含む): 291507840

約数和(自身を除く): 209905920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 64, 72, 80, 90, 93, 96, 120, 124, 128, 144, 155, 160, 180, 186, 192, 240, 248, 279, 288, 310, 320, 360, 372, 384, 457, 465, 480, 496, 558, 576, 620, 640, 720, 744, 914, 930, 960, 992, 1116, 1152, 1240, 1371, 1395, 1440, 1488, 1828, 1860, 1920, 1984, 2232, 2285, 2480, 2742, 2790, 2880, 2976, 3656, 3720, 3968, 4113, 4464, 4570, 4960, 5484, 5580, 5760, 5952, 6855, 7312, 7440, 8226, 8928, 9140, 9920, 10968, 11160, 11904, 13710, 14167, 14624, 14880, 16452, 17856, 18280, 19840, 20565, 21936, 22320, 27420, 28334, 29248, 29760, 32904, 35712, 36560, 41130, 42501, 43872, 44640, 54840, 56668, 58496, 59520, 65808, 70835, 73120, 82260, 85002, 87744, 89280, 109680, 113336, 127503, 131616, 141670, 146240, 164520, 170004, 175488, 178560, 212505, 219360, 226672, 255006, 263232, 283340, 292480, 329040, 340008, 425010, 438720, 453344, 510012, 526464, 566680, 637515, 658080, 680016, 850020, 877440, 906688, 1020024, 1133360, 1275030, 1316160, 1360032, 1700040, 1813376, 2040048, 2266720, 2550060, 2632320, 2720064, 3400080, 4080096, 4533440, 5100120, 5440128, 6800160, 8160192, 9066880, 10200240, 13600320, 16320384, 20400480, 27200640, 40800960, 81601920]

約数ペア:

[(1, 81601920), (2, 40800960), (3, 27200640), (4, 20400480), (5, 16320384), (6, 13600320), (8, 10200240), (9, 9066880), (10, 8160192), (12, 6800160), (15, 5440128), (16, 5100120), (18, 4533440), (20, 4080096), (24, 3400080), (30, 2720064), (31, 2632320), (32, 2550060), (36, 2266720), (40, 2040048), (45, 1813376), (48, 1700040), (60, 1360032), (62, 1316160), (64, 1275030), (72, 1133360), (80, 1020024), (90, 906688), (93, 877440), (96, 850020), (120, 680016), (124, 658080), (128, 637515), (144, 566680), (155, 526464), (160, 510012), (180, 453344), (186, 438720), (192, 425010), (240, 340008), (248, 329040), (279, 292480), (288, 283340), (310, 263232), (320, 255006), (360, 226672), (372, 219360), (384, 212505), (457, 178560), (465, 175488), (480, 170004), (496, 164520), (558, 146240), (576, 141670), (620, 131616), (640, 127503), (720, 113336), (744, 109680), (914, 89280), (930, 87744), (960, 85002), (992, 82260), (1116, 73120), (1152, 70835), (1240, 65808), (1371, 59520), (1395, 58496), (1440, 56668), (1488, 54840), (1828, 44640), (1860, 43872), (1920, 42501), (1984, 41130), (2232, 36560), (2285, 35712), (2480, 32904), (2742, 29760), (2790, 29248), (2880, 28334), (2976, 27420), (3656, 22320), (3720, 21936), (3968, 20565), (4113, 19840), (4464, 18280), (4570, 17856), (4960, 16452), (5484, 14880), (5580, 14624), (5760, 14167), (5952, 13710), (6855, 11904), (7312, 11160), (7440, 10968), (8226, 9920), (8928, 9140)]