20765511

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{883}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 33662720

約数和(自身を除く): 12897209

約数列:

[1, 3, 9, 13, 27, 39, 67, 117, 201, 351, 603, 871, 883, 1809, 2613, 2649, 7839, 7947, 11479, 23517, 23841, 34437, 59161, 103311, 177483, 309933, 532449, 769093, 1597347, 2307279, 6921837, 20765511]

約数ペア:

[(1, 20765511), (3, 6921837), (9, 2307279), (13, 1597347), (27, 769093), (39, 532449), (67, 309933), (117, 177483), (201, 103311), (351, 59161), (603, 34437), (871, 23841), (883, 23517), (1809, 11479), (2613, 7947), (2649, 7839)]