21605278

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{1523}}^1$

素因数の和:1739

約数の個数: 16

約数和(自身を含む): 33412176

約数和(自身を除く): 11806898

約数列:

[1, 2, 41, 82, 173, 346, 1523, 3046, 7093, 14186, 62443, 124886, 263479, 526958, 10802639, 21605278]

約数ペア:

[(1, 21605278), (2, 10802639), (41, 526958), (82, 263479), (173, 124886), (346, 62443), (1523, 14186), (3046, 7093)]