21115743

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20641}}^1$

素因数の和:20686

約数の個数: 16

約数和(自身を含む): 31706112

約数和(自身を除く): 10590369

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20641, 61923, 227051, 639871, 681153, 1919613, 7038581, 21115743]

約数ペア:

[(1, 21115743), (3, 7038581), (11, 1919613), (31, 681153), (33, 639871), (93, 227051), (341, 61923), (1023, 20641)]