397907811

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{217793}}^1$

素因数の和:217835

約数の個数: 24

約数和(自身を含む): 679517280

約数和(自身を除く): 281609469

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 217793, 653379, 1524551, 1960137, 4573653, 6315997, 13720959, 18947991, 44211979, 56843973, 132635937, 397907811]

約数ペア:

[(1, 397907811), (3, 132635937), (7, 56843973), (9, 44211979), (21, 18947991), (29, 13720959), (63, 6315997), (87, 4573653), (203, 1960137), (261, 1524551), (609, 653379), (1827, 217793)]