20488780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78803}}^1$

素因数の和:78825

約数の個数: 24

約数和(自身を含む): 46336752

約数和(自身を除く): 25847972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78803, 157606, 315212, 394015, 788030, 1024439, 1576060, 2048878, 4097756, 5122195, 10244390, 20488780]

約数ペア:

[(1, 20488780), (2, 10244390), (4, 5122195), (5, 4097756), (10, 2048878), (13, 1576060), (20, 1024439), (26, 788030), (52, 394015), (65, 315212), (130, 157606), (260, 78803)]