20900204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1451}}^1$

素因数の和:1745

約数の個数: 24

約数和(自身を含む): 39558288

約数和(自身を除く): 18658084

約数列:

[1, 2, 4, 13, 26, 52, 277, 554, 1108, 1451, 2902, 3601, 5804, 7202, 14404, 18863, 37726, 75452, 401927, 803854, 1607708, 5225051, 10450102, 20900204]

約数ペア:

[(1, 20900204), (2, 10450102), (4, 5225051), (13, 1607708), (26, 803854), (52, 401927), (277, 75452), (554, 37726), (1108, 18863), (1451, 14404), (2902, 7202), (3601, 5804)]