222222

素因数分解:

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

素因数の和:73

約数の個数: 64

約数和(自身を含む): 612864

約数和(自身を除く): 390642

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 37, 39, 42, 66, 74, 77, 78, 91, 111, 143, 154, 182, 222, 231, 259, 273, 286, 407, 429, 462, 481, 518, 546, 777, 814, 858, 962, 1001, 1221, 1443, 1554, 2002, 2442, 2849, 2886, 3003, 3367, 5291, 5698, 6006, 6734, 8547, 10101, 10582, 15873, 17094, 20202, 31746, 37037, 74074, 111111, 222222]

約数ペア:

[(1, 222222), (2, 111111), (3, 74074), (6, 37037), (7, 31746), (11, 20202), (13, 17094), (14, 15873), (21, 10582), (22, 10101), (26, 8547), (33, 6734), (37, 6006), (39, 5698), (42, 5291), (66, 3367), (74, 3003), (77, 2886), (78, 2849), (91, 2442), (111, 2002), (143, 1554), (154, 1443), (182, 1221), (222, 1001), (231, 962), (259, 858), (273, 814), (286, 777), (407, 546), (429, 518), (462, 481)]