20801571

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 32747520

約数和(自身を除く): 11945949

約数列:

[1, 3, 7, 21, 59, 103, 163, 177, 309, 413, 489, 721, 1141, 1239, 2163, 3423, 6077, 9617, 16789, 18231, 28851, 42539, 50367, 67319, 117523, 127617, 201957, 352569, 990551, 2971653, 6933857, 20801571]

約数ペア:

[(1, 20801571), (3, 6933857), (7, 2971653), (21, 990551), (59, 352569), (103, 201957), (163, 127617), (177, 117523), (309, 67319), (413, 50367), (489, 42539), (721, 28851), (1141, 18231), (1239, 16789), (2163, 9617), (3423, 6077)]