20985357

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{251}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 30028320

約数和(自身を除く): 9042963

約数列:

[1, 3, 29, 31, 87, 93, 251, 753, 899, 961, 2697, 2883, 7279, 7781, 21837, 23343, 27869, 83607, 225649, 241211, 676947, 723633, 6995119, 20985357]

約数ペア:

[(1, 20985357), (3, 6995119), (29, 723633), (31, 676947), (87, 241211), (93, 225649), (251, 83607), (753, 27869), (899, 23343), (961, 21837), (2697, 7781), (2883, 7279)]