639217440

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1873}}^1$

素因数の和:1976

約数の個数: 192

約数和(自身を含む): 2266790400

約数和(自身を除く): 1627572960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 79, 80, 90, 96, 108, 120, 135, 144, 158, 160, 180, 216, 237, 240, 270, 288, 316, 360, 395, 432, 474, 480, 540, 632, 711, 720, 790, 864, 948, 1080, 1185, 1264, 1422, 1440, 1580, 1873, 1896, 2133, 2160, 2370, 2528, 2844, 3160, 3555, 3746, 3792, 4266, 4320, 4740, 5619, 5688, 6320, 7110, 7492, 7584, 8532, 9365, 9480, 10665, 11238, 11376, 12640, 14220, 14984, 16857, 17064, 18730, 18960, 21330, 22476, 22752, 28095, 28440, 29968, 33714, 34128, 37460, 37920, 42660, 44952, 50571, 56190, 56880, 59936, 67428, 68256, 74920, 84285, 85320, 89904, 101142, 112380, 113760, 134856, 147967, 149840, 168570, 170640, 179808, 202284, 224760, 252855, 269712, 295934, 299680, 337140, 341280, 404568, 443901, 449520, 505710, 539424, 591868, 674280, 739835, 809136, 887802, 899040, 1011420, 1183736, 1331703, 1348560, 1479670, 1618272, 1775604, 2022840, 2219505, 2367472, 2663406, 2697120, 2959340, 3551208, 3995109, 4045680, 4439010, 4734944, 5326812, 5918680, 6658515, 7102416, 7990218, 8091360, 8878020, 10653624, 11837360, 13317030, 14204832, 15980436, 17756040, 19975545, 21307248, 23674720, 26634060, 31960872, 35512080, 39951090, 42614496, 53268120, 63921744, 71024160, 79902180, 106536240, 127843488, 159804360, 213072480, 319608720, 639217440]

約数ペア:

[(1, 639217440), (2, 319608720), (3, 213072480), (4, 159804360), (5, 127843488), (6, 106536240), (8, 79902180), (9, 71024160), (10, 63921744), (12, 53268120), (15, 42614496), (16, 39951090), (18, 35512080), (20, 31960872), (24, 26634060), (27, 23674720), (30, 21307248), (32, 19975545), (36, 17756040), (40, 15980436), (45, 14204832), (48, 13317030), (54, 11837360), (60, 10653624), (72, 8878020), (79, 8091360), (80, 7990218), (90, 7102416), (96, 6658515), (108, 5918680), (120, 5326812), (135, 4734944), (144, 4439010), (158, 4045680), (160, 3995109), (180, 3551208), (216, 2959340), (237, 2697120), (240, 2663406), (270, 2367472), (288, 2219505), (316, 2022840), (360, 1775604), (395, 1618272), (432, 1479670), (474, 1348560), (480, 1331703), (540, 1183736), (632, 1011420), (711, 899040), (720, 887802), (790, 809136), (864, 739835), (948, 674280), (1080, 591868), (1185, 539424), (1264, 505710), (1422, 449520), (1440, 443901), (1580, 404568), (1873, 341280), (1896, 337140), (2133, 299680), (2160, 295934), (2370, 269712), (2528, 252855), (2844, 224760), (3160, 202284), (3555, 179808), (3746, 170640), (3792, 168570), (4266, 149840), (4320, 147967), (4740, 134856), (5619, 113760), (5688, 112380), (6320, 101142), (7110, 89904), (7492, 85320), (7584, 84285), (8532, 74920), (9365, 68256), (9480, 67428), (10665, 59936), (11238, 56880), (11376, 56190), (12640, 50571), (14220, 44952), (14984, 42660), (16857, 37920), (17064, 37460), (18730, 34128), (18960, 33714), (21330, 29968), (22476, 28440), (22752, 28095)]