20538279

素因数分解:

$3^4\times {\mathrm{227}}^1\times {\mathrm{1117}}^1$

素因数の和:1356

約数の個数: 20

約数和(自身を含む): 30843384

約数和(自身を除く): 10305105

約数列:

[1, 3, 9, 27, 81, 227, 681, 1117, 2043, 3351, 6129, 10053, 18387, 30159, 90477, 253559, 760677, 2282031, 6846093, 20538279]

約数ペア:

[(1, 20538279), (3, 6846093), (9, 2282031), (27, 760677), (81, 253559), (227, 90477), (681, 30159), (1117, 18387), (2043, 10053), (3351, 6129)]