28167867

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 50622208

約数和(自身を除く): 22454341

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 163, 211, 273, 489, 633, 819, 1141, 1467, 1477, 1899, 2119, 2743, 3423, 4431, 6357, 8229, 10269, 13293, 14833, 19071, 19201, 24687, 34393, 44499, 57603, 103179, 133497, 172809, 240751, 309537, 447109, 722253, 1341327, 2166759, 3129763, 4023981, 9389289, 28167867]

約数ペア:

[(1, 28167867), (3, 9389289), (7, 4023981), (9, 3129763), (13, 2166759), (21, 1341327), (39, 722253), (63, 447109), (91, 309537), (117, 240751), (163, 172809), (211, 133497), (273, 103179), (489, 57603), (633, 44499), (819, 34393), (1141, 24687), (1467, 19201), (1477, 19071), (1899, 14833), (2119, 13293), (2743, 10269), (3423, 8229), (4431, 6357)]