20890791

素因数分解:

$3^4\times {\mathrm{349}}^1\times {\mathrm{739}}^1$

素因数の和:1100

約数の個数: 20

約数和(自身を含む): 31339000

約数和(自身を除く): 10448209

約数列:

[1, 3, 9, 27, 81, 349, 739, 1047, 2217, 3141, 6651, 9423, 19953, 28269, 59859, 257911, 773733, 2321199, 6963597, 20890791]

約数ペア:

[(1, 20890791), (3, 6963597), (9, 2321199), (27, 773733), (81, 257911), (349, 59859), (739, 28269), (1047, 19953), (2217, 9423), (3141, 6651)]