189910985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{691}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 263070720

約数和(自身を除く): 73159735

約数列:

[1, 5, 11, 19, 55, 95, 209, 263, 691, 1045, 1315, 2893, 3455, 4997, 7601, 13129, 14465, 24985, 38005, 54967, 65645, 144419, 181733, 274835, 722095, 908665, 1999063, 3452927, 9995315, 17264635, 37982197, 189910985]

約数ペア:

[(1, 189910985), (5, 37982197), (11, 17264635), (19, 9995315), (55, 3452927), (95, 1999063), (209, 908665), (263, 722095), (691, 274835), (1045, 181733), (1315, 144419), (2893, 65645), (3455, 54967), (4997, 38005), (7601, 24985), (13129, 14465)]