989901

素因数分解:

$3^4\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:135

約数の個数: 30

約数和(自身を含む): 1641486

約数和(自身を除く): 651585

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 101, 121, 297, 303, 363, 891, 909, 1089, 1111, 2727, 3267, 3333, 8181, 9801, 9999, 12221, 29997, 36663, 89991, 109989, 329967, 989901]

約数ペア:

[(1, 989901), (3, 329967), (9, 109989), (11, 89991), (27, 36663), (33, 29997), (81, 12221), (99, 9999), (101, 9801), (121, 8181), (297, 3333), (303, 3267), (363, 2727), (891, 1111), (909, 1089)]