28872909

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1913}}^1$

素因数の和:1978

約数の個数: 32

約数和(自身を含む): 47160960

約数和(自身を除く): 18288051

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1677, 1913, 5031, 5739, 15093, 17217, 24869, 51651, 74607, 82259, 223821, 246777, 671463, 740331, 1069367, 2220993, 3208101, 9624303, 28872909]

約数ペア:

[(1, 28872909), (3, 9624303), (9, 3208101), (13, 2220993), (27, 1069367), (39, 740331), (43, 671463), (117, 246777), (129, 223821), (351, 82259), (387, 74607), (559, 51651), (1161, 24869), (1677, 17217), (1913, 15093), (5031, 5739)]