81720512091

素因数分解:

$3^4\times {\mathrm{541}}^1\times {\mathrm{1864871}}^1$

素因数の和:1865424

約数の個数: 20

約数和(自身を含む): 122302035504

約数和(自身を除く): 40581523413

約数列:

[1, 3, 9, 27, 81, 541, 1623, 4869, 14607, 43821, 1864871, 5594613, 16783839, 50351517, 151054551, 1008895211, 3026685633, 9080056899, 27240170697, 81720512091]

約数ペア:

[(1, 81720512091), (3, 27240170697), (9, 9080056899), (27, 3026685633), (81, 1008895211), (541, 151054551), (1623, 50351517), (4869, 16783839), (14607, 5594613), (43821, 1864871)]