28811391

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{443}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 46602240

約数和(自身を除く): 17790849

約数列:

[1, 3, 7, 19, 21, 57, 133, 163, 399, 443, 489, 1141, 1329, 3097, 3101, 3423, 8417, 9291, 9303, 21679, 25251, 58919, 65037, 72209, 176757, 216627, 505463, 1371971, 1516389, 4115913, 9603797, 28811391]

約数ペア:

[(1, 28811391), (3, 9603797), (7, 4115913), (19, 1516389), (21, 1371971), (57, 505463), (133, 216627), (163, 176757), (399, 72209), (443, 65037), (489, 58919), (1141, 25251), (1329, 21679), (3097, 9303), (3101, 9291), (3423, 8417)]