81508960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:440

約数の個数: 96

約数和(自身を含む): 209563200

約数和(自身を除く): 128054240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 149, 160, 208, 260, 263, 298, 416, 520, 526, 596, 745, 1040, 1052, 1192, 1315, 1490, 1937, 2080, 2104, 2384, 2630, 2980, 3419, 3874, 4208, 4768, 5260, 5960, 6838, 7748, 8416, 9685, 10520, 11920, 13676, 15496, 17095, 19370, 21040, 23840, 27352, 30992, 34190, 38740, 39187, 42080, 54704, 61984, 68380, 77480, 78374, 109408, 136760, 154960, 156748, 195935, 273520, 309920, 313496, 391870, 509431, 547040, 626992, 783740, 1018862, 1253984, 1567480, 2037724, 2547155, 3134960, 4075448, 5094310, 6269920, 8150896, 10188620, 16301792, 20377240, 40754480, 81508960]

約数ペア:

[(1, 81508960), (2, 40754480), (4, 20377240), (5, 16301792), (8, 10188620), (10, 8150896), (13, 6269920), (16, 5094310), (20, 4075448), (26, 3134960), (32, 2547155), (40, 2037724), (52, 1567480), (65, 1253984), (80, 1018862), (104, 783740), (130, 626992), (149, 547040), (160, 509431), (208, 391870), (260, 313496), (263, 309920), (298, 273520), (416, 195935), (520, 156748), (526, 154960), (596, 136760), (745, 109408), (1040, 78374), (1052, 77480), (1192, 68380), (1315, 61984), (1490, 54704), (1937, 42080), (2080, 39187), (2104, 38740), (2384, 34190), (2630, 30992), (2980, 27352), (3419, 23840), (3874, 21040), (4208, 19370), (4768, 17095), (5260, 15496), (5960, 13676), (6838, 11920), (7748, 10520), (8416, 9685)]