18814256

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:537

約数の個数: 40

約数和(自身を含む): 38688000

約数和(自身を除く): 19873744

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 199, 304, 311, 398, 622, 796, 1244, 1592, 2488, 3184, 3781, 4976, 5909, 7562, 11818, 15124, 23636, 30248, 47272, 60496, 61889, 94544, 123778, 247556, 495112, 990224, 1175891, 2351782, 4703564, 9407128, 18814256]

約数ペア:

[(1, 18814256), (2, 9407128), (4, 4703564), (8, 2351782), (16, 1175891), (19, 990224), (38, 495112), (76, 247556), (152, 123778), (199, 94544), (304, 61889), (311, 60496), (398, 47272), (622, 30248), (796, 23636), (1244, 15124), (1592, 11818), (2488, 7562), (3184, 5909), (3781, 4976)]