81656640

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{727}}^1$

素因数の和:766

約数の個数: 224

約数和(自身を含む): 310652160

約数和(自身を除く): 228995520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 192, 195, 208, 216, 234, 240, 260, 270, 288, 312, 320, 351, 360, 390, 416, 432, 468, 480, 520, 540, 576, 585, 624, 702, 720, 727, 780, 832, 864, 936, 960, 1040, 1080, 1170, 1248, 1404, 1440, 1454, 1560, 1728, 1755, 1872, 2080, 2160, 2181, 2340, 2496, 2808, 2880, 2908, 3120, 3510, 3635, 3744, 4160, 4320, 4362, 4680, 5616, 5816, 6240, 6543, 7020, 7270, 7488, 8640, 8724, 9360, 9451, 10905, 11232, 11632, 12480, 13086, 14040, 14540, 17448, 18720, 18902, 19629, 21810, 22464, 23264, 26172, 28080, 28353, 29080, 32715, 34896, 37440, 37804, 39258, 43620, 46528, 47255, 52344, 56160, 56706, 58160, 65430, 69792, 75608, 78516, 85059, 87240, 94510, 98145, 104688, 112320, 113412, 116320, 130860, 139584, 141765, 151216, 157032, 170118, 174480, 189020, 196290, 209376, 226824, 232640, 255177, 261720, 283530, 302432, 314064, 340236, 348960, 378040, 392580, 418752, 425295, 453648, 510354, 523440, 567060, 604864, 628128, 680472, 697920, 756080, 785160, 850590, 907296, 1020708, 1046880, 1134120, 1256256, 1275885, 1360944, 1512160, 1570320, 1701180, 1814592, 2041416, 2093760, 2268240, 2551770, 2721888, 3024320, 3140640, 3402360, 4082832, 4536480, 5103540, 5443776, 6281280, 6804720, 8165664, 9072960, 10207080, 13609440, 16331328, 20414160, 27218880, 40828320, 81656640]

約数ペア:

[(1, 81656640), (2, 40828320), (3, 27218880), (4, 20414160), (5, 16331328), (6, 13609440), (8, 10207080), (9, 9072960), (10, 8165664), (12, 6804720), (13, 6281280), (15, 5443776), (16, 5103540), (18, 4536480), (20, 4082832), (24, 3402360), (26, 3140640), (27, 3024320), (30, 2721888), (32, 2551770), (36, 2268240), (39, 2093760), (40, 2041416), (45, 1814592), (48, 1701180), (52, 1570320), (54, 1512160), (60, 1360944), (64, 1275885), (65, 1256256), (72, 1134120), (78, 1046880), (80, 1020708), (90, 907296), (96, 850590), (104, 785160), (108, 756080), (117, 697920), (120, 680472), (130, 628128), (135, 604864), (144, 567060), (156, 523440), (160, 510354), (180, 453648), (192, 425295), (195, 418752), (208, 392580), (216, 378040), (234, 348960), (240, 340236), (260, 314064), (270, 302432), (288, 283530), (312, 261720), (320, 255177), (351, 232640), (360, 226824), (390, 209376), (416, 196290), (432, 189020), (468, 174480), (480, 170118), (520, 157032), (540, 151216), (576, 141765), (585, 139584), (624, 130860), (702, 116320), (720, 113412), (727, 112320), (780, 104688), (832, 98145), (864, 94510), (936, 87240), (960, 85059), (1040, 78516), (1080, 75608), (1170, 69792), (1248, 65430), (1404, 58160), (1440, 56706), (1454, 56160), (1560, 52344), (1728, 47255), (1755, 46528), (1872, 43620), (2080, 39258), (2160, 37804), (2181, 37440), (2340, 34896), (2496, 32715), (2808, 29080), (2880, 28353), (2908, 28080), (3120, 26172), (3510, 23264), (3635, 22464), (3744, 21810), (4160, 19629), (4320, 18902), (4362, 18720), (4680, 17448), (5616, 14540), (5816, 14040), (6240, 13086), (6543, 12480), (7020, 11632), (7270, 11232), (7488, 10905), (8640, 9451), (8724, 9360)]