81518360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:254

約数の個数: 192

約数和(自身を含む): 246240000

約数和(自身を除く): 164721640

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 49, 55, 56, 70, 76, 77, 88, 95, 98, 110, 133, 140, 152, 154, 190, 196, 199, 209, 220, 245, 266, 280, 308, 380, 385, 392, 398, 418, 440, 490, 532, 539, 616, 665, 760, 770, 796, 836, 931, 980, 995, 1045, 1064, 1078, 1330, 1393, 1463, 1540, 1592, 1672, 1862, 1960, 1990, 2090, 2156, 2189, 2660, 2695, 2786, 2926, 3080, 3724, 3781, 3980, 4180, 4312, 4378, 4655, 5320, 5390, 5572, 5852, 6965, 7315, 7448, 7562, 7960, 8360, 8756, 9310, 9751, 10241, 10780, 10945, 11144, 11704, 13930, 14630, 15124, 15323, 17512, 18620, 18905, 19502, 20482, 21560, 21890, 26467, 27860, 29260, 30248, 30646, 37240, 37810, 39004, 40964, 41591, 43780, 48755, 51205, 52934, 55720, 58520, 61292, 75620, 76615, 78008, 81928, 83182, 87560, 97510, 102410, 105868, 107261, 122584, 132335, 151240, 153230, 166364, 185269, 195020, 204820, 207955, 211736, 214522, 264670, 291137, 306460, 332728, 370538, 390040, 409640, 415910, 429044, 529340, 536305, 582274, 612920, 741076, 831820, 858088, 926345, 1058680, 1072610, 1164548, 1455685, 1482152, 1663640, 1852690, 2037959, 2145220, 2329096, 2911370, 3705380, 4075918, 4290440, 5822740, 7410760, 8151836, 10189795, 11645480, 16303672, 20379590, 40759180, 81518360]

約数ペア:

[(1, 81518360), (2, 40759180), (4, 20379590), (5, 16303672), (7, 11645480), (8, 10189795), (10, 8151836), (11, 7410760), (14, 5822740), (19, 4290440), (20, 4075918), (22, 3705380), (28, 2911370), (35, 2329096), (38, 2145220), (40, 2037959), (44, 1852690), (49, 1663640), (55, 1482152), (56, 1455685), (70, 1164548), (76, 1072610), (77, 1058680), (88, 926345), (95, 858088), (98, 831820), (110, 741076), (133, 612920), (140, 582274), (152, 536305), (154, 529340), (190, 429044), (196, 415910), (199, 409640), (209, 390040), (220, 370538), (245, 332728), (266, 306460), (280, 291137), (308, 264670), (380, 214522), (385, 211736), (392, 207955), (398, 204820), (418, 195020), (440, 185269), (490, 166364), (532, 153230), (539, 151240), (616, 132335), (665, 122584), (760, 107261), (770, 105868), (796, 102410), (836, 97510), (931, 87560), (980, 83182), (995, 81928), (1045, 78008), (1064, 76615), (1078, 75620), (1330, 61292), (1393, 58520), (1463, 55720), (1540, 52934), (1592, 51205), (1672, 48755), (1862, 43780), (1960, 41591), (1990, 40964), (2090, 39004), (2156, 37810), (2189, 37240), (2660, 30646), (2695, 30248), (2786, 29260), (2926, 27860), (3080, 26467), (3724, 21890), (3781, 21560), (3980, 20482), (4180, 19502), (4312, 18905), (4378, 18620), (4655, 17512), (5320, 15323), (5390, 15124), (5572, 14630), (5852, 13930), (6965, 11704), (7315, 11144), (7448, 10945), (7562, 10780), (7960, 10241), (8360, 9751), (8756, 9310)]