18998271

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{461}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 29069040

約数和(自身を除く): 10070769

約数列:

[1, 3, 9, 19, 57, 171, 241, 461, 723, 1383, 2169, 4149, 4579, 8759, 13737, 26277, 41211, 78831, 111101, 333303, 999909, 2110919, 6332757, 18998271]

約数ペア:

[(1, 18998271), (3, 6332757), (9, 2110919), (19, 999909), (57, 333303), (171, 111101), (241, 78831), (461, 41211), (723, 26277), (1383, 13737), (2169, 8759), (4149, 4579)]