20542868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{953}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 38224872

約数和(自身を除く): 17682004

約数列:

[1, 2, 4, 17, 34, 68, 317, 634, 953, 1268, 1906, 3812, 5389, 10778, 16201, 21556, 32402, 64804, 302101, 604202, 1208404, 5135717, 10271434, 20542868]

約数ペア:

[(1, 20542868), (2, 10271434), (4, 5135717), (17, 1208404), (34, 604202), (68, 302101), (317, 64804), (634, 32402), (953, 21556), (1268, 16201), (1906, 10778), (3812, 5389)]