21065771

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 23390208

約数和(自身を除く): 2324437

約数列:

[1, 17, 31, 71, 527, 563, 1207, 2201, 9571, 17453, 37417, 39973, 296701, 679541, 1239163, 21065771]

約数ペア:

[(1, 21065771), (17, 1239163), (31, 679541), (71, 296701), (527, 39973), (563, 37417), (1207, 17453), (2201, 9571)]