20997394

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{263}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15497966

約数列:

[1, 2, 11, 19, 22, 38, 191, 209, 263, 382, 418, 526, 2101, 2893, 3629, 4202, 4997, 5786, 7258, 9994, 39919, 50233, 54967, 79838, 100466, 109934, 552563, 954427, 1105126, 1908854, 10498697, 20997394]

約数ペア:

[(1, 20997394), (2, 10498697), (11, 1908854), (19, 1105126), (22, 954427), (38, 552563), (191, 109934), (209, 100466), (263, 79838), (382, 54967), (418, 50233), (526, 39919), (2101, 9994), (2893, 7258), (3629, 5786), (4202, 4997)]