666666

素因数分解:

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

素因数の和:76

約数の個数: 96

約数和(自身を含む): 1991808

約数和(自身を除く): 1325142

約数列:

[1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 33, 37, 39, 42, 63, 66, 74, 77, 78, 91, 99, 111, 117, 126, 143, 154, 182, 198, 222, 231, 234, 259, 273, 286, 333, 407, 429, 462, 481, 518, 546, 666, 693, 777, 814, 819, 858, 962, 1001, 1221, 1287, 1386, 1443, 1554, 1638, 2002, 2331, 2442, 2574, 2849, 2886, 3003, 3367, 3663, 4329, 4662, 5291, 5698, 6006, 6734, 7326, 8547, 8658, 9009, 10101, 10582, 15873, 17094, 18018, 20202, 25641, 30303, 31746, 37037, 47619, 51282, 60606, 74074, 95238, 111111, 222222, 333333, 666666]

約数ペア:

[(1, 666666), (2, 333333), (3, 222222), (6, 111111), (7, 95238), (9, 74074), (11, 60606), (13, 51282), (14, 47619), (18, 37037), (21, 31746), (22, 30303), (26, 25641), (33, 20202), (37, 18018), (39, 17094), (42, 15873), (63, 10582), (66, 10101), (74, 9009), (77, 8658), (78, 8547), (91, 7326), (99, 6734), (111, 6006), (117, 5698), (126, 5291), (143, 4662), (154, 4329), (182, 3663), (198, 3367), (222, 3003), (231, 2886), (234, 2849), (259, 2574), (273, 2442), (286, 2331), (333, 2002), (407, 1638), (429, 1554), (462, 1443), (481, 1386), (518, 1287), (546, 1221), (666, 1001), (693, 962), (777, 858), (814, 819)]