20199382960

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{21649}}^1$

素因数の和:21878

約数の個数: 80

約数和(自身を含む): 47839572000

約数和(自身を除く): 27640189040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 109, 214, 218, 428, 436, 535, 545, 856, 872, 1070, 1090, 1712, 1744, 2140, 2180, 4280, 4360, 8560, 8720, 11663, 21649, 23326, 43298, 46652, 58315, 86596, 93304, 108245, 116630, 173192, 186608, 216490, 233260, 346384, 432980, 466520, 865960, 933040, 1731920, 2316443, 2359741, 4632886, 4719482, 9265772, 9438964, 11582215, 11798705, 18531544, 18877928, 23164430, 23597410, 37063088, 37755856, 46328860, 47194820, 92657720, 94389640, 185315440, 188779280, 252492287, 504984574, 1009969148, 1262461435, 2019938296, 2524922870, 4039876592, 5049845740, 10099691480, 20199382960]

約数ペア:

[(1, 20199382960), (2, 10099691480), (4, 5049845740), (5, 4039876592), (8, 2524922870), (10, 2019938296), (16, 1262461435), (20, 1009969148), (40, 504984574), (80, 252492287), (107, 188779280), (109, 185315440), (214, 94389640), (218, 92657720), (428, 47194820), (436, 46328860), (535, 37755856), (545, 37063088), (856, 23597410), (872, 23164430), (1070, 18877928), (1090, 18531544), (1712, 11798705), (1744, 11582215), (2140, 9438964), (2180, 9265772), (4280, 4719482), (4360, 4632886), (8560, 2359741), (8720, 2316443), (11663, 1731920), (21649, 933040), (23326, 865960), (43298, 466520), (46652, 432980), (58315, 346384), (86596, 233260), (93304, 216490), (108245, 186608), (116630, 173192)]