81747666

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{349}}^1$

素因数の和:401

約数の個数: 144

約数和(自身を含む): 239803200

約数和(自身を除く): 158055534

約数列:

[1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 33, 39, 42, 63, 66, 77, 78, 91, 99, 117, 126, 143, 154, 169, 182, 198, 231, 234, 273, 286, 338, 349, 429, 462, 507, 546, 693, 698, 819, 858, 1001, 1014, 1047, 1183, 1287, 1386, 1521, 1638, 1859, 2002, 2094, 2366, 2443, 2574, 3003, 3042, 3141, 3549, 3718, 3839, 4537, 4886, 5577, 6006, 6282, 7098, 7329, 7678, 9009, 9074, 10647, 11154, 11517, 13013, 13611, 14658, 16731, 18018, 21294, 21987, 23034, 26026, 26873, 27222, 31759, 33462, 34551, 39039, 40833, 43974, 49907, 53746, 58981, 63518, 69102, 78078, 80619, 81666, 95277, 99814, 117117, 117962, 149721, 161238, 176943, 190554, 234234, 241857, 285831, 299442, 349349, 353886, 412867, 449163, 483714, 530829, 571662, 648791, 698698, 825734, 898326, 1048047, 1061658, 1238601, 1297582, 1946373, 2096094, 2477202, 3144141, 3715803, 3892746, 4541537, 5839119, 6288282, 7431606, 9083074, 11678238, 13624611, 27249222, 40873833, 81747666]

約数ペア:

[(1, 81747666), (2, 40873833), (3, 27249222), (6, 13624611), (7, 11678238), (9, 9083074), (11, 7431606), (13, 6288282), (14, 5839119), (18, 4541537), (21, 3892746), (22, 3715803), (26, 3144141), (33, 2477202), (39, 2096094), (42, 1946373), (63, 1297582), (66, 1238601), (77, 1061658), (78, 1048047), (91, 898326), (99, 825734), (117, 698698), (126, 648791), (143, 571662), (154, 530829), (169, 483714), (182, 449163), (198, 412867), (231, 353886), (234, 349349), (273, 299442), (286, 285831), (338, 241857), (349, 234234), (429, 190554), (462, 176943), (507, 161238), (546, 149721), (693, 117962), (698, 117117), (819, 99814), (858, 95277), (1001, 81666), (1014, 80619), (1047, 78078), (1183, 69102), (1287, 63518), (1386, 58981), (1521, 53746), (1638, 49907), (1859, 43974), (2002, 40833), (2094, 39039), (2366, 34551), (2443, 33462), (2574, 31759), (3003, 27222), (3042, 26873), (3141, 26026), (3549, 23034), (3718, 21987), (3839, 21294), (4537, 18018), (4886, 16731), (5577, 14658), (6006, 13611), (6282, 13013), (7098, 11517), (7329, 11154), (7678, 10647), (9009, 9074)]