21306681

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{2593}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 33991776

約数和(自身を除く): 12685095

約数列:

[1, 3, 9, 11, 33, 83, 99, 249, 747, 913, 2593, 2739, 7779, 8217, 23337, 28523, 85569, 215219, 256707, 645657, 1936971, 2367409, 7102227, 21306681]

約数ペア:

[(1, 21306681), (3, 7102227), (9, 2367409), (11, 1936971), (33, 645657), (83, 256707), (99, 215219), (249, 85569), (747, 28523), (913, 23337), (2593, 8217), (2739, 7779)]