21057069

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{8741}}^1$

素因数の和:8828

約数の個数: 16

約数和(自身を含む): 31051584

約数和(自身を除く): 9994515

約数列:

[1, 3, 11, 33, 73, 219, 803, 2409, 8741, 26223, 96151, 288453, 638093, 1914279, 7019023, 21057069]

約数ペア:

[(1, 21057069), (3, 7019023), (11, 1914279), (33, 638093), (73, 288453), (219, 96151), (803, 26223), (2409, 8741)]