21804471

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20707}}^1$

素因数の和:20732

約数の個数: 20

約数和(自身を含む): 35079352

約数和(自身を除く): 13274881

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20707, 62121, 186363, 269191, 559089, 807573, 1677267, 2422719, 7268157, 21804471]

約数ペア:

[(1, 21804471), (3, 7268157), (9, 2422719), (13, 1677267), (27, 807573), (39, 559089), (81, 269191), (117, 186363), (351, 62121), (1053, 20707)]