81617913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{16223}}^1$

素因数の和:16285

約数の個数: 24

約数和(自身を含む): 129921792

約数和(自身を除く): 48303879

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 5031, 16223, 48669, 146007, 210899, 632697, 697589, 1898091, 2092767, 6278301, 9068657, 27205971, 81617913]

約数ペア:

[(1, 81617913), (3, 27205971), (9, 9068657), (13, 6278301), (39, 2092767), (43, 1898091), (117, 697589), (129, 632697), (387, 210899), (559, 146007), (1677, 48669), (5031, 16223)]