638520057

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{1201}}^1$

素因数の和:1343

約数の個数: 64

約数和(自身を含む): 1130841600

約数和(自身を除く): 492321543

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 97, 189, 203, 261, 291, 609, 679, 783, 873, 1201, 1827, 2037, 2619, 2813, 3603, 5481, 6111, 8407, 8439, 10809, 18333, 19691, 25221, 25317, 32427, 34829, 59073, 75663, 75951, 104487, 116497, 177219, 226989, 243803, 313461, 349491, 531657, 731409, 815479, 940383, 1048473, 2194227, 2446437, 3145419, 3378413, 6582681, 7339311, 10135239, 22017933, 23648891, 30405717, 70946673, 91217151, 212840019, 638520057]

約数ペア:

[(1, 638520057), (3, 212840019), (7, 91217151), (9, 70946673), (21, 30405717), (27, 23648891), (29, 22017933), (63, 10135239), (87, 7339311), (97, 6582681), (189, 3378413), (203, 3145419), (261, 2446437), (291, 2194227), (609, 1048473), (679, 940383), (783, 815479), (873, 731409), (1201, 531657), (1827, 349491), (2037, 313461), (2619, 243803), (2813, 226989), (3603, 177219), (5481, 116497), (6111, 104487), (8407, 75951), (8439, 75663), (10809, 59073), (18333, 34829), (19691, 32427), (25221, 25317)]