20705727

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 33251328

約数和(自身を除く): 12545601

約数列:

[1, 3, 7, 21, 23, 69, 161, 163, 263, 483, 489, 789, 1141, 1841, 3423, 3749, 5523, 6049, 11247, 18147, 26243, 42343, 42869, 78729, 127029, 128607, 300083, 900249, 985987, 2957961, 6901909, 20705727]

約数ペア:

[(1, 20705727), (3, 6901909), (7, 2957961), (21, 985987), (23, 900249), (69, 300083), (161, 128607), (163, 127029), (263, 78729), (483, 42869), (489, 42343), (789, 26243), (1141, 18147), (1841, 11247), (3423, 6049), (3749, 5523)]