20721666

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1129}}^1$

素因数の和:1183

約数の個数: 64

約数和(自身を含む): 52070400

約数和(自身を除く): 31348734

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 23, 38, 42, 46, 57, 69, 114, 133, 138, 161, 266, 322, 399, 437, 483, 798, 874, 966, 1129, 1311, 2258, 2622, 3059, 3387, 6118, 6774, 7903, 9177, 15806, 18354, 21451, 23709, 25967, 42902, 47418, 51934, 64353, 77901, 128706, 150157, 155802, 181769, 300314, 363538, 450471, 493373, 545307, 900942, 986746, 1090614, 1480119, 2960238, 3453611, 6907222, 10360833, 20721666]

約数ペア:

[(1, 20721666), (2, 10360833), (3, 6907222), (6, 3453611), (7, 2960238), (14, 1480119), (19, 1090614), (21, 986746), (23, 900942), (38, 545307), (42, 493373), (46, 450471), (57, 363538), (69, 300314), (114, 181769), (133, 155802), (138, 150157), (161, 128706), (266, 77901), (322, 64353), (399, 51934), (437, 47418), (483, 42902), (798, 25967), (874, 23709), (966, 21451), (1129, 18354), (1311, 15806), (2258, 9177), (2622, 7903), (3059, 6774), (3387, 6118)]