20332221

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{337}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 35627904

約数和(自身を除く): 15295683

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 169, 221, 273, 337, 357, 507, 663, 1011, 1183, 1547, 2359, 2873, 3549, 4381, 4641, 5729, 7077, 8619, 13143, 17187, 20111, 30667, 40103, 56953, 60333, 74477, 92001, 120309, 170859, 223431, 398671, 521339, 968201, 1196013, 1564017, 2904603, 6777407, 20332221]

約数ペア:

[(1, 20332221), (3, 6777407), (7, 2904603), (13, 1564017), (17, 1196013), (21, 968201), (39, 521339), (51, 398671), (91, 223431), (119, 170859), (169, 120309), (221, 92001), (273, 74477), (337, 60333), (357, 56953), (507, 40103), (663, 30667), (1011, 20111), (1183, 17187), (1547, 13143), (2359, 8619), (2873, 7077), (3549, 5729), (4381, 4641)]