20706381

素因数分解:

$3^3\times {\mathrm{149}}^1\times {\mathrm{5147}}^1$

素因数の和:5305

約数の個数: 16

約数和(自身を含む): 30888000

約数和(自身を除く): 10181619

約数列:

[1, 3, 9, 27, 149, 447, 1341, 4023, 5147, 15441, 46323, 138969, 766903, 2300709, 6902127, 20706381]

約数ペア:

[(1, 20706381), (3, 6902127), (9, 2300709), (27, 766903), (149, 138969), (447, 46323), (1341, 15441), (4023, 5147)]