20485719

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 30646512

約数和(自身を除く): 10160793

約数列:

[1, 3, 9, 53, 67, 159, 201, 477, 603, 641, 1923, 3551, 5769, 10653, 31959, 33973, 42947, 101919, 128841, 305757, 386523, 2276191, 6828573, 20485719]

約数ペア:

[(1, 20485719), (3, 6828573), (9, 2276191), (53, 386523), (67, 305757), (159, 128841), (201, 101919), (477, 42947), (603, 33973), (641, 31959), (1923, 10653), (3551, 5769)]