81259920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:750

約数の個数: 240

約数和(自身を含む): 325907712

約数和(自身を除く): 244647792

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 23, 24, 28, 30, 35, 36, 40, 42, 45, 46, 48, 56, 60, 63, 69, 70, 72, 80, 84, 90, 92, 105, 112, 115, 120, 126, 138, 140, 144, 161, 168, 180, 184, 207, 210, 230, 240, 252, 276, 280, 315, 322, 336, 345, 360, 368, 414, 420, 460, 483, 504, 552, 560, 630, 644, 690, 701, 720, 805, 828, 840, 920, 966, 1008, 1035, 1104, 1260, 1288, 1380, 1402, 1449, 1610, 1656, 1680, 1840, 1932, 2070, 2103, 2415, 2520, 2576, 2760, 2804, 2898, 3220, 3312, 3505, 3864, 4140, 4206, 4830, 4907, 5040, 5520, 5608, 5796, 6309, 6440, 7010, 7245, 7728, 8280, 8412, 9660, 9814, 10515, 11216, 11592, 12618, 12880, 14020, 14490, 14721, 16123, 16560, 16824, 19320, 19628, 21030, 23184, 24535, 25236, 28040, 28980, 29442, 31545, 32246, 33648, 38640, 39256, 42060, 44163, 48369, 49070, 50472, 56080, 57960, 58884, 63090, 64492, 73605, 78512, 80615, 84120, 88326, 96738, 98140, 100944, 112861, 115920, 117768, 126180, 128984, 145107, 147210, 161230, 168240, 176652, 193476, 196280, 220815, 225722, 235536, 241845, 252360, 257968, 290214, 294420, 322460, 338583, 353304, 386952, 392560, 441630, 451444, 483690, 504720, 564305, 580428, 588840, 644920, 677166, 706608, 725535, 773904, 883260, 902888, 967380, 1015749, 1128610, 1160856, 1177680, 1289840, 1354332, 1451070, 1692915, 1766520, 1805776, 1934760, 2031498, 2257220, 2321712, 2708664, 2902140, 3385830, 3533040, 3869520, 4062996, 4514440, 5078745, 5417328, 5804280, 6771660, 8125992, 9028880, 10157490, 11608560, 13543320, 16251984, 20314980, 27086640, 40629960, 81259920]

約数ペア:

[(1, 81259920), (2, 40629960), (3, 27086640), (4, 20314980), (5, 16251984), (6, 13543320), (7, 11608560), (8, 10157490), (9, 9028880), (10, 8125992), (12, 6771660), (14, 5804280), (15, 5417328), (16, 5078745), (18, 4514440), (20, 4062996), (21, 3869520), (23, 3533040), (24, 3385830), (28, 2902140), (30, 2708664), (35, 2321712), (36, 2257220), (40, 2031498), (42, 1934760), (45, 1805776), (46, 1766520), (48, 1692915), (56, 1451070), (60, 1354332), (63, 1289840), (69, 1177680), (70, 1160856), (72, 1128610), (80, 1015749), (84, 967380), (90, 902888), (92, 883260), (105, 773904), (112, 725535), (115, 706608), (120, 677166), (126, 644920), (138, 588840), (140, 580428), (144, 564305), (161, 504720), (168, 483690), (180, 451444), (184, 441630), (207, 392560), (210, 386952), (230, 353304), (240, 338583), (252, 322460), (276, 294420), (280, 290214), (315, 257968), (322, 252360), (336, 241845), (345, 235536), (360, 225722), (368, 220815), (414, 196280), (420, 193476), (460, 176652), (483, 168240), (504, 161230), (552, 147210), (560, 145107), (630, 128984), (644, 126180), (690, 117768), (701, 115920), (720, 112861), (805, 100944), (828, 98140), (840, 96738), (920, 88326), (966, 84120), (1008, 80615), (1035, 78512), (1104, 73605), (1260, 64492), (1288, 63090), (1380, 58884), (1402, 57960), (1449, 56080), (1610, 50472), (1656, 49070), (1680, 48369), (1840, 44163), (1932, 42060), (2070, 39256), (2103, 38640), (2415, 33648), (2520, 32246), (2576, 31545), (2760, 29442), (2804, 28980), (2898, 28040), (3220, 25236), (3312, 24535), (3505, 23184), (3864, 21030), (4140, 19628), (4206, 19320), (4830, 16824), (4907, 16560), (5040, 16123), (5520, 14721), (5608, 14490), (5796, 14020), (6309, 12880), (6440, 12618), (7010, 11592), (7245, 11216), (7728, 10515), (8280, 9814), (8412, 9660)]