21571191

素因数分解:

$3^4\times {\mathrm{251}}^1\times {\mathrm{1061}}^1$

素因数の和:1324

約数の個数: 20

約数和(自身を含む): 32382504

約数和(自身を除く): 10811313

約数列:

[1, 3, 9, 27, 81, 251, 753, 1061, 2259, 3183, 6777, 9549, 20331, 28647, 85941, 266311, 798933, 2396799, 7190397, 21571191]

約数ペア:

[(1, 21571191), (3, 7190397), (9, 2396799), (27, 798933), (81, 266311), (251, 85941), (753, 28647), (1061, 20331), (2259, 9549), (3183, 6777)]