20518732

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{2003}}^1$

素因数の和:2217

約数の個数: 24

約数和(自身を含む): 38885616

約数和(自身を除く): 18366884

約数列:

[1, 2, 4, 13, 26, 52, 197, 394, 788, 2003, 2561, 4006, 5122, 8012, 10244, 26039, 52078, 104156, 394591, 789182, 1578364, 5129683, 10259366, 20518732]

約数ペア:

[(1, 20518732), (2, 10259366), (4, 5129683), (13, 1578364), (26, 789182), (52, 394591), (197, 104156), (394, 52078), (788, 26039), (2003, 10244), (2561, 8012), (4006, 5122)]