20881354

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{11987}}^1$

素因数の和:12069

約数の個数: 16

約数和(自身を含む): 34237728

約数和(自身を除く): 13356374

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 11987, 23974, 155831, 311662, 803129, 1606258, 10440677, 20881354]

約数ペア:

[(1, 20881354), (2, 10440677), (13, 1606258), (26, 803129), (67, 311662), (134, 155831), (871, 23974), (1742, 11987)]