20880451640

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1531}}^1\times {\mathrm{5779}}^1$

素因数の和:7380

約数の個数: 64

約数和(自身を含む): 47816784000

約数和(自身を除く): 26936332360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 1531, 2360, 3062, 5779, 6124, 7655, 11558, 12248, 15310, 23116, 28895, 30620, 46232, 57790, 61240, 90329, 115580, 180658, 231160, 340961, 361316, 451645, 681922, 722632, 903290, 1363844, 1704805, 1806580, 2727688, 3409610, 3613160, 6819220, 8847649, 13638440, 17695298, 35390596, 44238245, 70781192, 88476490, 176952980, 353905960, 522011291, 1044022582, 2088045164, 2610056455, 4176090328, 5220112910, 10440225820, 20880451640]

約数ペア:

[(1, 20880451640), (2, 10440225820), (4, 5220112910), (5, 4176090328), (8, 2610056455), (10, 2088045164), (20, 1044022582), (40, 522011291), (59, 353905960), (118, 176952980), (236, 88476490), (295, 70781192), (472, 44238245), (590, 35390596), (1180, 17695298), (1531, 13638440), (2360, 8847649), (3062, 6819220), (5779, 3613160), (6124, 3409610), (7655, 2727688), (11558, 1806580), (12248, 1704805), (15310, 1363844), (23116, 903290), (28895, 722632), (30620, 681922), (46232, 451645), (57790, 361316), (61240, 340961), (90329, 231160), (115580, 180658)]