20561984

素因数分解:

$2^6\times {\mathrm{101}}^1\times {\mathrm{3181}}^1$

素因数の和:3294

約数の個数: 28

約数和(自身を含む): 41219628

約数和(自身を除く): 20657644

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 202, 404, 808, 1616, 3181, 3232, 6362, 6464, 12724, 25448, 50896, 101792, 203584, 321281, 642562, 1285124, 2570248, 5140496, 10280992, 20561984]

約数ペア:

[(1, 20561984), (2, 10280992), (4, 5140496), (8, 2570248), (16, 1285124), (32, 642562), (64, 321281), (101, 203584), (202, 101792), (404, 50896), (808, 25448), (1616, 12724), (3181, 6464), (3232, 6362)]