81211312

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{193}}^1$

素因数の和:255

約数の個数: 120

約数和(自身を含む): 206785376

約数和(自身を除く): 125574064

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 91, 104, 112, 119, 136, 182, 193, 208, 221, 238, 272, 289, 364, 386, 442, 476, 578, 728, 772, 884, 952, 1156, 1351, 1456, 1544, 1547, 1768, 1904, 2023, 2312, 2509, 2702, 3088, 3094, 3281, 3536, 3757, 4046, 4624, 5018, 5404, 6188, 6562, 7514, 8092, 10036, 10808, 12376, 13124, 15028, 16184, 17563, 20072, 21616, 22967, 24752, 26248, 26299, 30056, 32368, 35126, 40144, 42653, 45934, 52496, 52598, 55777, 60112, 70252, 85306, 91868, 105196, 111554, 140504, 170612, 183736, 210392, 223108, 281008, 298571, 341224, 367472, 390439, 420784, 446216, 597142, 682448, 725101, 780878, 892432, 1194284, 1450202, 1561756, 2388568, 2900404, 3123512, 4777136, 5075707, 5800808, 6247024, 10151414, 11601616, 20302828, 40605656, 81211312]

約数ペア:

[(1, 81211312), (2, 40605656), (4, 20302828), (7, 11601616), (8, 10151414), (13, 6247024), (14, 5800808), (16, 5075707), (17, 4777136), (26, 3123512), (28, 2900404), (34, 2388568), (52, 1561756), (56, 1450202), (68, 1194284), (91, 892432), (104, 780878), (112, 725101), (119, 682448), (136, 597142), (182, 446216), (193, 420784), (208, 390439), (221, 367472), (238, 341224), (272, 298571), (289, 281008), (364, 223108), (386, 210392), (442, 183736), (476, 170612), (578, 140504), (728, 111554), (772, 105196), (884, 91868), (952, 85306), (1156, 70252), (1351, 60112), (1456, 55777), (1544, 52598), (1547, 52496), (1768, 45934), (1904, 42653), (2023, 40144), (2312, 35126), (2509, 32368), (2702, 30056), (3088, 26299), (3094, 26248), (3281, 24752), (3536, 22967), (3757, 21616), (4046, 20072), (4624, 17563), (5018, 16184), (5404, 15028), (6188, 13124), (6562, 12376), (7514, 10808), (8092, 10036)]