20902293

素因数分解:

$3^4\times {\mathrm{211}}^1\times {\mathrm{1223}}^1$

素因数の和:1446

約数の個数: 20

約数和(自身を含む): 31398048

約数和(自身を除く): 10495755

約数列:

[1, 3, 9, 27, 81, 211, 633, 1223, 1899, 3669, 5697, 11007, 17091, 33021, 99063, 258053, 774159, 2322477, 6967431, 20902293]

約数ペア:

[(1, 20902293), (3, 6967431), (9, 2322477), (27, 774159), (81, 258053), (211, 99063), (633, 33021), (1223, 17091), (1899, 11007), (3669, 5697)]