220155309

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{31321}}^1$

素因数の和:31409

約数の個数: 24

約数和(自身を含む): 351808704

約数和(自身を除く): 131653395

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 7029, 31321, 93963, 281889, 344531, 1033593, 2223791, 3100779, 6671373, 20014119, 24461701, 73385103, 220155309]

約数ペア:

[(1, 220155309), (3, 73385103), (9, 24461701), (11, 20014119), (33, 6671373), (71, 3100779), (99, 2223791), (213, 1033593), (639, 344531), (781, 281889), (2343, 93963), (7029, 31321)]