20493956

素因数分解:

$2^2\times 7^2\times {\mathrm{104561}}^1$

素因数の和:104579

約数の個数: 18

約数和(自身を含む): 41720238

約数和(自身を除く): 21226282

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 104561, 209122, 418244, 731927, 1463854, 2927708, 5123489, 10246978, 20493956]

約数ペア:

[(1, 20493956), (2, 10246978), (4, 5123489), (7, 2927708), (14, 1463854), (28, 731927), (49, 418244), (98, 209122), (196, 104561)]