21778744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1063}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 44241120

約数和(自身を除く): 22462376

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 1063, 1576, 2126, 2561, 4252, 5122, 8504, 10244, 13819, 20488, 27638, 55276, 110552, 209411, 418822, 837644, 1675288, 2722343, 5444686, 10889372, 21778744]

約数ペア:

[(1, 21778744), (2, 10889372), (4, 5444686), (8, 2722343), (13, 1675288), (26, 837644), (52, 418822), (104, 209411), (197, 110552), (394, 55276), (788, 27638), (1063, 20488), (1576, 13819), (2126, 10244), (2561, 8504), (4252, 5122)]