81398520

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:164

約数の個数: 320

約数和(自身を含む): 324434880

約数和(自身を除く): 243036360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 37, 40, 42, 45, 54, 56, 60, 63, 70, 72, 74, 81, 84, 90, 97, 105, 108, 111, 120, 126, 135, 140, 148, 162, 168, 180, 185, 189, 194, 210, 216, 222, 252, 259, 270, 280, 291, 296, 315, 324, 333, 360, 370, 378, 388, 405, 420, 444, 485, 504, 518, 540, 555, 567, 582, 630, 648, 666, 679, 740, 756, 776, 777, 810, 840, 873, 888, 945, 970, 999, 1036, 1080, 1110, 1134, 1164, 1260, 1295, 1332, 1358, 1455, 1480, 1512, 1554, 1620, 1665, 1746, 1890, 1940, 1998, 2037, 2072, 2220, 2268, 2328, 2331, 2520, 2590, 2619, 2664, 2716, 2835, 2910, 2997, 3108, 3240, 3330, 3395, 3492, 3589, 3780, 3880, 3885, 3996, 4074, 4365, 4440, 4536, 4662, 4995, 5180, 5238, 5432, 5670, 5820, 5994, 6111, 6216, 6660, 6790, 6984, 6993, 7178, 7560, 7770, 7857, 7992, 8148, 8730, 9324, 9990, 10185, 10360, 10476, 10767, 11340, 11640, 11655, 11988, 12222, 13095, 13320, 13580, 13986, 14356, 14985, 15540, 15714, 16296, 17460, 17945, 18333, 18648, 19980, 20370, 20952, 20979, 21534, 22680, 23310, 23976, 24444, 25123, 26190, 27160, 27972, 28712, 29970, 30555, 31080, 31428, 32301, 34920, 34965, 35890, 36666, 39285, 39960, 40740, 41958, 43068, 46620, 48888, 50246, 52380, 53835, 54999, 55944, 59940, 61110, 62856, 64602, 69930, 71780, 73332, 75369, 78570, 81480, 83916, 86136, 91665, 93240, 96903, 100492, 104760, 104895, 107670, 109998, 119880, 122220, 125615, 129204, 139860, 143560, 146664, 150738, 157140, 161505, 167832, 183330, 193806, 200984, 209790, 215340, 219996, 226107, 244440, 251230, 258408, 274995, 279720, 290709, 301476, 314280, 323010, 366660, 376845, 387612, 419580, 430680, 439992, 452214, 484515, 502460, 549990, 581418, 602952, 646020, 678321, 733320, 753690, 775224, 839160, 904428, 969030, 1004920, 1099980, 1130535, 1162836, 1292040, 1356642, 1453545, 1507380, 1808856, 1938060, 2034963, 2199960, 2261070, 2325672, 2713284, 2907090, 3014760, 3391605, 3876120, 4069926, 4522140, 5426568, 5814180, 6783210, 8139852, 9044280, 10174815, 11628360, 13566420, 16279704, 20349630, 27132840, 40699260, 81398520]

約数ペア:

[(1, 81398520), (2, 40699260), (3, 27132840), (4, 20349630), (5, 16279704), (6, 13566420), (7, 11628360), (8, 10174815), (9, 9044280), (10, 8139852), (12, 6783210), (14, 5814180), (15, 5426568), (18, 4522140), (20, 4069926), (21, 3876120), (24, 3391605), (27, 3014760), (28, 2907090), (30, 2713284), (35, 2325672), (36, 2261070), (37, 2199960), (40, 2034963), (42, 1938060), (45, 1808856), (54, 1507380), (56, 1453545), (60, 1356642), (63, 1292040), (70, 1162836), (72, 1130535), (74, 1099980), (81, 1004920), (84, 969030), (90, 904428), (97, 839160), (105, 775224), (108, 753690), (111, 733320), (120, 678321), (126, 646020), (135, 602952), (140, 581418), (148, 549990), (162, 502460), (168, 484515), (180, 452214), (185, 439992), (189, 430680), (194, 419580), (210, 387612), (216, 376845), (222, 366660), (252, 323010), (259, 314280), (270, 301476), (280, 290709), (291, 279720), (296, 274995), (315, 258408), (324, 251230), (333, 244440), (360, 226107), (370, 219996), (378, 215340), (388, 209790), (405, 200984), (420, 193806), (444, 183330), (485, 167832), (504, 161505), (518, 157140), (540, 150738), (555, 146664), (567, 143560), (582, 139860), (630, 129204), (648, 125615), (666, 122220), (679, 119880), (740, 109998), (756, 107670), (776, 104895), (777, 104760), (810, 100492), (840, 96903), (873, 93240), (888, 91665), (945, 86136), (970, 83916), (999, 81480), (1036, 78570), (1080, 75369), (1110, 73332), (1134, 71780), (1164, 69930), (1260, 64602), (1295, 62856), (1332, 61110), (1358, 59940), (1455, 55944), (1480, 54999), (1512, 53835), (1554, 52380), (1620, 50246), (1665, 48888), (1746, 46620), (1890, 43068), (1940, 41958), (1998, 40740), (2037, 39960), (2072, 39285), (2220, 36666), (2268, 35890), (2328, 34965), (2331, 34920), (2520, 32301), (2590, 31428), (2619, 31080), (2664, 30555), (2716, 29970), (2835, 28712), (2910, 27972), (2997, 27160), (3108, 26190), (3240, 25123), (3330, 24444), (3395, 23976), (3492, 23310), (3589, 22680), (3780, 21534), (3880, 20979), (3885, 20952), (3996, 20370), (4074, 19980), (4365, 18648), (4440, 18333), (4536, 17945), (4662, 17460), (4995, 16296), (5180, 15714), (5238, 15540), (5432, 14985), (5670, 14356), (5820, 13986), (5994, 13580), (6111, 13320), (6216, 13095), (6660, 12222), (6790, 11988), (6984, 11655), (6993, 11640), (7178, 11340), (7560, 10767), (7770, 10476), (7857, 10360), (7992, 10185), (8148, 9990), (8730, 9324)]