89991

素因数分解:

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

素因数の和:124

約数の個数: 20

約数和(自身を含む): 148104

約数和(自身を除く): 58113

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 101, 297, 303, 891, 909, 1111, 2727, 3333, 8181, 9999, 29997, 89991]

約数ペア:

[(1, 89991), (3, 29997), (9, 9999), (11, 8181), (27, 3333), (33, 2727), (81, 1111), (99, 909), (101, 891), (297, 303)]