259968393

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{1531}}^1$

素因数の和:1890

約数の個数: 32

約数和(自身を含む): 406899200

約数和(自身を除く): 146930807

約数列:

[1, 3, 9, 19, 27, 57, 171, 331, 513, 993, 1531, 2979, 4593, 6289, 8937, 13779, 18867, 29089, 41337, 56601, 87267, 169803, 261801, 506761, 785403, 1520283, 4560849, 9628459, 13682547, 28885377, 86656131, 259968393]

約数ペア:

[(1, 259968393), (3, 86656131), (9, 28885377), (19, 13682547), (27, 9628459), (57, 4560849), (171, 1520283), (331, 785403), (513, 506761), (993, 261801), (1531, 169803), (2979, 87267), (4593, 56601), (6289, 41337), (8937, 29089), (13779, 18867)]