81019521

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{90931}}^1$

素因数の和:90954

約数の個数: 20

約数和(自身を含む): 132033264

約数和(自身を除く): 51013743

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 90931, 272793, 818379, 1000241, 2455137, 3000723, 7365411, 9002169, 27006507, 81019521]

約数ペア:

[(1, 81019521), (3, 27006507), (9, 9002169), (11, 7365411), (27, 3000723), (33, 2455137), (81, 1000241), (99, 818379), (297, 272793), (891, 90931)]