81282916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 178192224

約数和(自身を除く): 96909308

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 169, 187, 221, 286, 338, 374, 442, 572, 643, 676, 748, 884, 1286, 1859, 2431, 2572, 2873, 3718, 4862, 5746, 7073, 7436, 8359, 9724, 10931, 11492, 14146, 16718, 21862, 28292, 31603, 33436, 43724, 63206, 91949, 108667, 120241, 126412, 142103, 183898, 217334, 240482, 284206, 367796, 434668, 480964, 568412, 1195337, 1563133, 1847339, 2390674, 3126266, 3694678, 4781348, 6252532, 7389356, 20320729, 40641458, 81282916]

約数ペア:

[(1, 81282916), (2, 40641458), (4, 20320729), (11, 7389356), (13, 6252532), (17, 4781348), (22, 3694678), (26, 3126266), (34, 2390674), (44, 1847339), (52, 1563133), (68, 1195337), (143, 568412), (169, 480964), (187, 434668), (221, 367796), (286, 284206), (338, 240482), (374, 217334), (442, 183898), (572, 142103), (643, 126412), (676, 120241), (748, 108667), (884, 91949), (1286, 63206), (1859, 43724), (2431, 33436), (2572, 31603), (2873, 28292), (3718, 21862), (4862, 16718), (5746, 14146), (7073, 11492), (7436, 10931), (8359, 9724)]