397326447

素因数分解:

$3^2\times 7^2\times {\mathrm{311}}^1\times {\mathrm{2897}}^1$

素因数の和:3228

約数の個数: 36

約数和(自身を含む): 669994416

約数和(自身を除く): 272667969

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 311, 441, 933, 2177, 2799, 2897, 6531, 8691, 15239, 19593, 20279, 26073, 45717, 60837, 137151, 141953, 182511, 425859, 900967, 1277577, 2702901, 6306769, 8108703, 18920307, 44147383, 56760921, 132442149, 397326447]

約数ペア:

[(1, 397326447), (3, 132442149), (7, 56760921), (9, 44147383), (21, 18920307), (49, 8108703), (63, 6306769), (147, 2702901), (311, 1277577), (441, 900967), (933, 425859), (2177, 182511), (2799, 141953), (2897, 137151), (6531, 60837), (8691, 45717), (15239, 26073), (19593, 20279)]