28118493

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 47226816

約数和(自身を除く): 19108323

約数列:

[1, 3, 9, 13, 17, 39, 51, 67, 117, 153, 201, 211, 221, 603, 633, 663, 871, 1139, 1899, 1989, 2613, 2743, 3417, 3587, 7839, 8229, 10251, 10761, 14137, 14807, 24687, 32283, 42411, 44421, 46631, 127233, 133263, 139893, 183781, 240329, 419679, 551343, 720987, 1654029, 2162961, 3124277, 9372831, 28118493]

約数ペア:

[(1, 28118493), (3, 9372831), (9, 3124277), (13, 2162961), (17, 1654029), (39, 720987), (51, 551343), (67, 419679), (117, 240329), (153, 183781), (201, 139893), (211, 133263), (221, 127233), (603, 46631), (633, 44421), (663, 42411), (871, 32283), (1139, 24687), (1899, 14807), (1989, 14137), (2613, 10761), (2743, 10251), (3417, 8229), (3587, 7839)]