81230121

素因数分解:

$3^4\times 7^1\times {\mathrm{143263}}^1$

素因数の和:143282

約数の個数: 20

約数和(自身を含む): 138679552

約数和(自身を除く): 57449431

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 143263, 429789, 1002841, 1289367, 3008523, 3868101, 9025569, 11604303, 27076707, 81230121]

約数ペア:

[(1, 81230121), (3, 27076707), (7, 11604303), (9, 9025569), (21, 3868101), (27, 3008523), (63, 1289367), (81, 1002841), (189, 429789), (567, 143263)]