19290271

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2753}}^1$

素因数の和:2791

約数の個数: 24

約数和(自身を含む): 26372304

約数和(自身を除く): 7082033

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 2753, 7007, 19271, 30283, 35789, 134897, 211981, 250523, 393679, 1483867, 1753661, 2755753, 19290271]

約数ペア:

[(1, 19290271), (7, 2755753), (11, 1753661), (13, 1483867), (49, 393679), (77, 250523), (91, 211981), (143, 134897), (539, 35789), (637, 30283), (1001, 19271), (2753, 7007)]