81809497

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{281}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 108288000

約数和(自身を除く): 26478503

約数列:

[1, 7, 11, 19, 77, 133, 199, 209, 281, 1393, 1463, 1967, 2189, 3091, 3781, 5339, 15323, 21637, 26467, 37373, 41591, 55919, 58729, 291137, 391433, 411103, 615109, 1062461, 4305763, 7437227, 11687071, 81809497]

約数ペア:

[(1, 81809497), (7, 11687071), (11, 7437227), (19, 4305763), (77, 1062461), (133, 615109), (199, 411103), (209, 391433), (281, 291137), (1393, 58729), (1463, 55919), (1967, 41591), (2189, 37373), (3091, 26467), (3781, 21637), (5339, 15323)]