81225760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:399

約数の個数: 192

約数和(自身を含む): 252564480

約数和(自身を除く): 171338720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 19, 20, 22, 28, 32, 35, 38, 40, 44, 55, 56, 70, 76, 77, 80, 88, 95, 110, 112, 133, 140, 152, 154, 160, 176, 190, 209, 220, 224, 266, 280, 304, 308, 347, 352, 380, 385, 418, 440, 532, 560, 608, 616, 665, 694, 760, 770, 836, 880, 1045, 1064, 1120, 1232, 1330, 1388, 1463, 1520, 1540, 1672, 1735, 1760, 2090, 2128, 2429, 2464, 2660, 2776, 2926, 3040, 3080, 3344, 3470, 3817, 4180, 4256, 4858, 5320, 5552, 5852, 6160, 6593, 6688, 6940, 7315, 7634, 8360, 9716, 10640, 11104, 11704, 12145, 12320, 13186, 13880, 14630, 15268, 16720, 19085, 19432, 21280, 23408, 24290, 26372, 26719, 27760, 29260, 30536, 32965, 33440, 38170, 38864, 46151, 46816, 48580, 52744, 53438, 55520, 58520, 61072, 65930, 72523, 76340, 77728, 92302, 97160, 105488, 106876, 117040, 122144, 131860, 133595, 145046, 152680, 184604, 194320, 210976, 213752, 230755, 234080, 263720, 267190, 290092, 305360, 362615, 369208, 388640, 427504, 461510, 507661, 527440, 534380, 580184, 610720, 725230, 738416, 855008, 923020, 1015322, 1054880, 1068760, 1160368, 1450460, 1476832, 1846040, 2030644, 2137520, 2320736, 2538305, 2900920, 3692080, 4061288, 4275040, 5076610, 5801840, 7384160, 8122576, 10153220, 11603680, 16245152, 20306440, 40612880, 81225760]

約数ペア:

[(1, 81225760), (2, 40612880), (4, 20306440), (5, 16245152), (7, 11603680), (8, 10153220), (10, 8122576), (11, 7384160), (14, 5801840), (16, 5076610), (19, 4275040), (20, 4061288), (22, 3692080), (28, 2900920), (32, 2538305), (35, 2320736), (38, 2137520), (40, 2030644), (44, 1846040), (55, 1476832), (56, 1450460), (70, 1160368), (76, 1068760), (77, 1054880), (80, 1015322), (88, 923020), (95, 855008), (110, 738416), (112, 725230), (133, 610720), (140, 580184), (152, 534380), (154, 527440), (160, 507661), (176, 461510), (190, 427504), (209, 388640), (220, 369208), (224, 362615), (266, 305360), (280, 290092), (304, 267190), (308, 263720), (347, 234080), (352, 230755), (380, 213752), (385, 210976), (418, 194320), (440, 184604), (532, 152680), (560, 145046), (608, 133595), (616, 131860), (665, 122144), (694, 117040), (760, 106876), (770, 105488), (836, 97160), (880, 92302), (1045, 77728), (1064, 76340), (1120, 72523), (1232, 65930), (1330, 61072), (1388, 58520), (1463, 55520), (1520, 53438), (1540, 52744), (1672, 48580), (1735, 46816), (1760, 46151), (2090, 38864), (2128, 38170), (2429, 33440), (2464, 32965), (2660, 30536), (2776, 29260), (2926, 27760), (3040, 26719), (3080, 26372), (3344, 24290), (3470, 23408), (3817, 21280), (4180, 19432), (4256, 19085), (4858, 16720), (5320, 15268), (5552, 14630), (5852, 13880), (6160, 13186), (6593, 12320), (6688, 12145), (6940, 11704), (7315, 11104), (7634, 10640), (8360, 9716)]