19881927

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1559}}^1$

素因数の和:1687

約数の個数: 24

約数和(自身を含む): 31231200

約数和(自身を除く): 11349273

約数列:

[1, 3, 9, 13, 39, 109, 117, 327, 981, 1417, 1559, 4251, 4677, 12753, 14031, 20267, 60801, 169931, 182403, 509793, 1529379, 2209103, 6627309, 19881927]

約数ペア:

[(1, 19881927), (3, 6627309), (9, 2209103), (13, 1529379), (39, 509793), (109, 182403), (117, 169931), (327, 60801), (981, 20267), (1417, 14031), (1559, 12753), (4251, 4677)]