20988214

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18773}}^1$

素因数の和:18831

約数の個数: 16

約数和(自身を含む): 34694352

約数和(自身を除く): 13706138

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18773, 37546, 244049, 488098, 807239, 1614478, 10494107, 20988214]

約数ペア:

[(1, 20988214), (2, 10494107), (13, 1614478), (26, 807239), (43, 488098), (86, 244049), (559, 37546), (1118, 18773)]