20902761

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1061}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 33134400

約数和(自身を除く): 12231639

約数列:

[1, 3, 9, 11, 33, 99, 199, 597, 1061, 1791, 2189, 3183, 6567, 9549, 11671, 19701, 35013, 105039, 211139, 633417, 1900251, 2322529, 6967587, 20902761]

約数ペア:

[(1, 20902761), (3, 6967587), (9, 2322529), (11, 1900251), (33, 633417), (99, 211139), (199, 105039), (597, 35013), (1061, 19701), (1791, 11671), (2189, 9549), (3183, 6567)]