21115492

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16986908

約数列:

[1, 2, 4, 41, 82, 164, 199, 398, 647, 796, 1294, 2588, 8159, 16318, 26527, 32636, 53054, 106108, 128753, 257506, 515012, 5278873, 10557746, 21115492]

約数ペア:

[(1, 21115492), (2, 10557746), (4, 5278873), (41, 515012), (82, 257506), (164, 128753), (199, 106108), (398, 53054), (647, 32636), (796, 26527), (1294, 16318), (2588, 8159)]