208536489

素因数分解:

$3^2\times 7^1\times {\mathrm{1103}}^1\times {\mathrm{3001}}^1$

素因数の和:4117

約数の個数: 24

約数和(自身を含む): 344677632

約数和(自身を除く): 136141143

約数列:

[1, 3, 7, 9, 21, 63, 1103, 3001, 3309, 7721, 9003, 9927, 21007, 23163, 27009, 63021, 69489, 189063, 3310103, 9930309, 23170721, 29790927, 69512163, 208536489]

約数ペア:

[(1, 208536489), (3, 69512163), (7, 29790927), (9, 23170721), (21, 9930309), (63, 3310103), (1103, 189063), (3001, 69489), (3309, 63021), (7721, 27009), (9003, 23163), (9927, 21007)]