81237260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312451}}^1$

素因数の和:312473

約数の個数: 24

約数和(自身を含む): 183721776

約数和(自身を除く): 102484516

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312451, 624902, 1249804, 1562255, 3124510, 4061863, 6249020, 8123726, 16247452, 20309315, 40618630, 81237260]

約数ペア:

[(1, 81237260), (2, 40618630), (4, 20309315), (5, 16247452), (10, 8123726), (13, 6249020), (20, 4061863), (26, 3124510), (52, 1562255), (65, 1249804), (130, 624902), (260, 312451)]