81239760

素因数分解:

$2^4\times 3^6\times 5^1\times 7^1\times {\mathrm{199}}^1$

素因数の和:237

約数の個数: 280

約数和(自身を含む): 325276800

約数和(自身を除く): 244037040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 199, 210, 216, 240, 243, 252, 270, 280, 315, 324, 336, 360, 378, 398, 405, 420, 432, 486, 504, 540, 560, 567, 597, 630, 648, 720, 729, 756, 796, 810, 840, 945, 972, 995, 1008, 1080, 1134, 1194, 1215, 1260, 1296, 1393, 1458, 1512, 1592, 1620, 1680, 1701, 1791, 1890, 1944, 1990, 2160, 2268, 2388, 2430, 2520, 2786, 2835, 2916, 2985, 3024, 3184, 3240, 3402, 3582, 3645, 3780, 3888, 3980, 4179, 4536, 4776, 4860, 5040, 5103, 5373, 5572, 5670, 5832, 5970, 6480, 6804, 6965, 7164, 7290, 7560, 7960, 8358, 8505, 8955, 9072, 9552, 9720, 10206, 10746, 11144, 11340, 11664, 11940, 12537, 13608, 13930, 14328, 14580, 15120, 15920, 16119, 16716, 17010, 17910, 19440, 20412, 20895, 21492, 22288, 22680, 23880, 25074, 25515, 26865, 27216, 27860, 28656, 29160, 32238, 33432, 34020, 35820, 37611, 40824, 41790, 42984, 45360, 47760, 48357, 50148, 51030, 53730, 55720, 58320, 62685, 64476, 66864, 68040, 71640, 75222, 80595, 81648, 83580, 85968, 96714, 100296, 102060, 107460, 111440, 112833, 125370, 128952, 136080, 143280, 145071, 150444, 161190, 167160, 188055, 193428, 200592, 204120, 214920, 225666, 241785, 250740, 257904, 290142, 300888, 322380, 334320, 338499, 376110, 386856, 408240, 429840, 451332, 483570, 501480, 564165, 580284, 601776, 644760, 676998, 725355, 752220, 773712, 902664, 967140, 1002960, 1015497, 1128330, 1160568, 1289520, 1353996, 1450710, 1504440, 1692495, 1805328, 1934280, 2030994, 2256660, 2321136, 2707992, 2901420, 3008880, 3384990, 3868560, 4061988, 4513320, 5077485, 5415984, 5802840, 6769980, 8123976, 9026640, 10154970, 11605680, 13539960, 16247952, 20309940, 27079920, 40619880, 81239760]

約数ペア:

[(1, 81239760), (2, 40619880), (3, 27079920), (4, 20309940), (5, 16247952), (6, 13539960), (7, 11605680), (8, 10154970), (9, 9026640), (10, 8123976), (12, 6769980), (14, 5802840), (15, 5415984), (16, 5077485), (18, 4513320), (20, 4061988), (21, 3868560), (24, 3384990), (27, 3008880), (28, 2901420), (30, 2707992), (35, 2321136), (36, 2256660), (40, 2030994), (42, 1934280), (45, 1805328), (48, 1692495), (54, 1504440), (56, 1450710), (60, 1353996), (63, 1289520), (70, 1160568), (72, 1128330), (80, 1015497), (81, 1002960), (84, 967140), (90, 902664), (105, 773712), (108, 752220), (112, 725355), (120, 676998), (126, 644760), (135, 601776), (140, 580284), (144, 564165), (162, 501480), (168, 483570), (180, 451332), (189, 429840), (199, 408240), (210, 386856), (216, 376110), (240, 338499), (243, 334320), (252, 322380), (270, 300888), (280, 290142), (315, 257904), (324, 250740), (336, 241785), (360, 225666), (378, 214920), (398, 204120), (405, 200592), (420, 193428), (432, 188055), (486, 167160), (504, 161190), (540, 150444), (560, 145071), (567, 143280), (597, 136080), (630, 128952), (648, 125370), (720, 112833), (729, 111440), (756, 107460), (796, 102060), (810, 100296), (840, 96714), (945, 85968), (972, 83580), (995, 81648), (1008, 80595), (1080, 75222), (1134, 71640), (1194, 68040), (1215, 66864), (1260, 64476), (1296, 62685), (1393, 58320), (1458, 55720), (1512, 53730), (1592, 51030), (1620, 50148), (1680, 48357), (1701, 47760), (1791, 45360), (1890, 42984), (1944, 41790), (1990, 40824), (2160, 37611), (2268, 35820), (2388, 34020), (2430, 33432), (2520, 32238), (2786, 29160), (2835, 28656), (2916, 27860), (2985, 27216), (3024, 26865), (3184, 25515), (3240, 25074), (3402, 23880), (3582, 22680), (3645, 22288), (3780, 21492), (3888, 20895), (3980, 20412), (4179, 19440), (4536, 17910), (4776, 17010), (4860, 16716), (5040, 16119), (5103, 15920), (5373, 15120), (5572, 14580), (5670, 14328), (5832, 13930), (5970, 13608), (6480, 12537), (6804, 11940), (6965, 11664), (7164, 11340), (7290, 11144), (7560, 10746), (7960, 10206), (8358, 9720), (8505, 9552), (8955, 9072)]