20928861

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{1511}}^1$

素因数の和:1548

約数の個数: 28

約数和(自身を含む): 33052320

約数和(自身を除く): 12123459

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 729, 1511, 1539, 4533, 4617, 13599, 13851, 28709, 40797, 86127, 122391, 258381, 367173, 775143, 1101519, 2325429, 6976287, 20928861]

約数ペア:

[(1, 20928861), (3, 6976287), (9, 2325429), (19, 1101519), (27, 775143), (57, 367173), (81, 258381), (171, 122391), (243, 86127), (513, 40797), (729, 28709), (1511, 13851), (1539, 13599), (4533, 4617)]