20516188

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1129}}^1$

素因数の和:1210

約数の個数: 48

約数和(自身を含む): 45561600

約数和(自身を除く): 25045412

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 59, 77, 118, 154, 236, 308, 413, 649, 826, 1129, 1298, 1652, 2258, 2596, 4516, 4543, 7903, 9086, 12419, 15806, 18172, 24838, 31612, 49676, 66611, 86933, 133222, 173866, 266444, 347732, 466277, 732721, 932554, 1465442, 1865108, 2930884, 5129047, 10258094, 20516188]

約数ペア:

[(1, 20516188), (2, 10258094), (4, 5129047), (7, 2930884), (11, 1865108), (14, 1465442), (22, 932554), (28, 732721), (44, 466277), (59, 347732), (77, 266444), (118, 173866), (154, 133222), (236, 86933), (308, 66611), (413, 49676), (649, 31612), (826, 24838), (1129, 18172), (1298, 15806), (1652, 12419), (2258, 9086), (2596, 7903), (4516, 4543)]