20921134

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18713}}^1$

素因数の和:18771

約数の個数: 16

約数和(自身を含む): 34583472

約数和(自身を除く): 13662338

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18713, 37426, 243269, 486538, 804659, 1609318, 10460567, 20921134]

約数ペア:

[(1, 20921134), (2, 10460567), (13, 1609318), (26, 804659), (43, 486538), (86, 243269), (559, 37426), (1118, 18713)]