81881280

素因数分解:

$2^6\times 3^9\times 5^1\times {\mathrm{13}}^1$

素因数の和:57

約数の個数: 280

約数和(自身を含む): 314962032

約数和(自身を除く): 233080752

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, 81, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 162, 180, 192, 195, 208, 216, 234, 240, 243, 260, 270, 288, 312, 320, 324, 351, 360, 390, 405, 416, 432, 468, 480, 486, 520, 540, 576, 585, 624, 648, 702, 720, 729, 780, 810, 832, 864, 936, 960, 972, 1040, 1053, 1080, 1170, 1215, 1248, 1296, 1404, 1440, 1458, 1560, 1620, 1728, 1755, 1872, 1944, 2080, 2106, 2160, 2187, 2340, 2430, 2496, 2592, 2808, 2880, 2916, 3120, 3159, 3240, 3510, 3645, 3744, 3888, 4160, 4212, 4320, 4374, 4680, 4860, 5184, 5265, 5616, 5832, 6240, 6318, 6480, 6561, 7020, 7290, 7488, 7776, 8424, 8640, 8748, 9360, 9477, 9720, 10530, 10935, 11232, 11664, 12480, 12636, 12960, 13122, 14040, 14580, 15552, 15795, 16848, 17496, 18720, 18954, 19440, 19683, 21060, 21870, 22464, 23328, 25272, 25920, 26244, 28080, 28431, 29160, 31590, 32805, 33696, 34992, 37440, 37908, 38880, 39366, 42120, 43740, 46656, 47385, 50544, 52488, 56160, 56862, 58320, 63180, 65610, 67392, 69984, 75816, 77760, 78732, 84240, 85293, 87480, 94770, 98415, 101088, 104976, 112320, 113724, 116640, 126360, 131220, 139968, 142155, 151632, 157464, 168480, 170586, 174960, 189540, 196830, 202176, 209952, 227448, 233280, 252720, 255879, 262440, 284310, 303264, 314928, 336960, 341172, 349920, 379080, 393660, 419904, 426465, 454896, 505440, 511758, 524880, 568620, 606528, 629856, 682344, 699840, 758160, 787320, 852930, 909792, 1010880, 1023516, 1049760, 1137240, 1259712, 1279395, 1364688, 1516320, 1574640, 1705860, 1819584, 2047032, 2099520, 2274480, 2558790, 2729376, 3032640, 3149280, 3411720, 4094064, 4548960, 5117580, 5458752, 6298560, 6823440, 8188128, 9097920, 10235160, 13646880, 16376256, 20470320, 27293760, 40940640, 81881280]

約数ペア:

[(1, 81881280), (2, 40940640), (3, 27293760), (4, 20470320), (5, 16376256), (6, 13646880), (8, 10235160), (9, 9097920), (10, 8188128), (12, 6823440), (13, 6298560), (15, 5458752), (16, 5117580), (18, 4548960), (20, 4094064), (24, 3411720), (26, 3149280), (27, 3032640), (30, 2729376), (32, 2558790), (36, 2274480), (39, 2099520), (40, 2047032), (45, 1819584), (48, 1705860), (52, 1574640), (54, 1516320), (60, 1364688), (64, 1279395), (65, 1259712), (72, 1137240), (78, 1049760), (80, 1023516), (81, 1010880), (90, 909792), (96, 852930), (104, 787320), (108, 758160), (117, 699840), (120, 682344), (130, 629856), (135, 606528), (144, 568620), (156, 524880), (160, 511758), (162, 505440), (180, 454896), (192, 426465), (195, 419904), (208, 393660), (216, 379080), (234, 349920), (240, 341172), (243, 336960), (260, 314928), (270, 303264), (288, 284310), (312, 262440), (320, 255879), (324, 252720), (351, 233280), (360, 227448), (390, 209952), (405, 202176), (416, 196830), (432, 189540), (468, 174960), (480, 170586), (486, 168480), (520, 157464), (540, 151632), (576, 142155), (585, 139968), (624, 131220), (648, 126360), (702, 116640), (720, 113724), (729, 112320), (780, 104976), (810, 101088), (832, 98415), (864, 94770), (936, 87480), (960, 85293), (972, 84240), (1040, 78732), (1053, 77760), (1080, 75816), (1170, 69984), (1215, 67392), (1248, 65610), (1296, 63180), (1404, 58320), (1440, 56862), (1458, 56160), (1560, 52488), (1620, 50544), (1728, 47385), (1755, 46656), (1872, 43740), (1944, 42120), (2080, 39366), (2106, 38880), (2160, 37908), (2187, 37440), (2340, 34992), (2430, 33696), (2496, 32805), (2592, 31590), (2808, 29160), (2880, 28431), (2916, 28080), (3120, 26244), (3159, 25920), (3240, 25272), (3510, 23328), (3645, 22464), (3744, 21870), (3888, 21060), (4160, 19683), (4212, 19440), (4320, 18954), (4374, 18720), (4680, 17496), (4860, 16848), (5184, 15795), (5265, 15552), (5616, 14580), (5832, 14040), (6240, 13122), (6318, 12960), (6480, 12636), (6561, 12480), (7020, 11664), (7290, 11232), (7488, 10935), (7776, 10530), (8424, 9720), (8640, 9477), (8748, 9360)]