81999918

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 256

約数和(自身を含む): 257402880

約数和(自身を除く): 175402962

約数列:

[1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 27, 33, 37, 39, 41, 42, 54, 63, 66, 74, 77, 78, 82, 91, 99, 111, 117, 123, 126, 143, 154, 182, 189, 198, 222, 231, 234, 246, 259, 273, 286, 287, 297, 333, 351, 369, 378, 407, 429, 451, 462, 481, 518, 533, 546, 574, 594, 666, 693, 702, 738, 777, 814, 819, 858, 861, 902, 962, 999, 1001, 1066, 1107, 1221, 1287, 1353, 1386, 1443, 1517, 1554, 1599, 1638, 1722, 1998, 2002, 2079, 2214, 2331, 2442, 2457, 2574, 2583, 2706, 2849, 2886, 3003, 3034, 3157, 3198, 3367, 3663, 3731, 3861, 4059, 4158, 4329, 4551, 4662, 4797, 4914, 5166, 5291, 5698, 5863, 6006, 6314, 6734, 6993, 7326, 7462, 7722, 7749, 8118, 8547, 8658, 9009, 9102, 9471, 9594, 10101, 10582, 10619, 10989, 11193, 11726, 12177, 12987, 13653, 13986, 14391, 15498, 15873, 16687, 17094, 17589, 18018, 18942, 19721, 20202, 21238, 21978, 22386, 24354, 25641, 25974, 27027, 27306, 28413, 28782, 30303, 31746, 31857, 33374, 33579, 35178, 37037, 39442, 40959, 41041, 47619, 50061, 51282, 52767, 54054, 56826, 59163, 60606, 63714, 67158, 74074, 76923, 81918, 82082, 85239, 90909, 95238, 95571, 100122, 100737, 105534, 111111, 116809, 118326, 123123, 138047, 142857, 150183, 153846, 158301, 170478, 177489, 181818, 191142, 201474, 216931, 222222, 233618, 246246, 276094, 285714, 286713, 300366, 316602, 333333, 350427, 354978, 369369, 414141, 433862, 450549, 532467, 573426, 650793, 666666, 700854, 738738, 828282, 901098, 999999, 1051281, 1064934, 1108107, 1242423, 1301586, 1518517, 1952379, 1999998, 2102562, 2216214, 2484846, 3037034, 3153843, 3727269, 3904758, 4555551, 5857137, 6307686, 7454538, 9111102, 11714274, 13666653, 27333306, 40999959, 81999918]

約数ペア:

[(1, 81999918), (2, 40999959), (3, 27333306), (6, 13666653), (7, 11714274), (9, 9111102), (11, 7454538), (13, 6307686), (14, 5857137), (18, 4555551), (21, 3904758), (22, 3727269), (26, 3153843), (27, 3037034), (33, 2484846), (37, 2216214), (39, 2102562), (41, 1999998), (42, 1952379), (54, 1518517), (63, 1301586), (66, 1242423), (74, 1108107), (77, 1064934), (78, 1051281), (82, 999999), (91, 901098), (99, 828282), (111, 738738), (117, 700854), (123, 666666), (126, 650793), (143, 573426), (154, 532467), (182, 450549), (189, 433862), (198, 414141), (222, 369369), (231, 354978), (234, 350427), (246, 333333), (259, 316602), (273, 300366), (286, 286713), (287, 285714), (297, 276094), (333, 246246), (351, 233618), (369, 222222), (378, 216931), (407, 201474), (429, 191142), (451, 181818), (462, 177489), (481, 170478), (518, 158301), (533, 153846), (546, 150183), (574, 142857), (594, 138047), (666, 123123), (693, 118326), (702, 116809), (738, 111111), (777, 105534), (814, 100737), (819, 100122), (858, 95571), (861, 95238), (902, 90909), (962, 85239), (999, 82082), (1001, 81918), (1066, 76923), (1107, 74074), (1221, 67158), (1287, 63714), (1353, 60606), (1386, 59163), (1443, 56826), (1517, 54054), (1554, 52767), (1599, 51282), (1638, 50061), (1722, 47619), (1998, 41041), (2002, 40959), (2079, 39442), (2214, 37037), (2331, 35178), (2442, 33579), (2457, 33374), (2574, 31857), (2583, 31746), (2706, 30303), (2849, 28782), (2886, 28413), (3003, 27306), (3034, 27027), (3157, 25974), (3198, 25641), (3367, 24354), (3663, 22386), (3731, 21978), (3861, 21238), (4059, 20202), (4158, 19721), (4329, 18942), (4551, 18018), (4662, 17589), (4797, 17094), (4914, 16687), (5166, 15873), (5291, 15498), (5698, 14391), (5863, 13986), (6006, 13653), (6314, 12987), (6734, 12177), (6993, 11726), (7326, 11193), (7462, 10989), (7722, 10619), (7749, 10582), (8118, 10101), (8547, 9594), (8658, 9471), (9009, 9102)]