18018819

素因数分解:

$3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:489

約数の個数: 48

約数和(自身を含む): 32760000

約数和(自身を除く): 14741181

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 343, 441, 449, 637, 819, 1029, 1347, 1911, 3087, 3143, 4041, 4459, 5733, 5837, 9429, 13377, 17511, 22001, 28287, 40131, 40859, 52533, 66003, 122577, 154007, 198009, 286013, 367731, 462021, 858039, 1386063, 2002091, 2574117, 6006273, 18018819]

約数ペア:

[(1, 18018819), (3, 6006273), (7, 2574117), (9, 2002091), (13, 1386063), (21, 858039), (39, 462021), (49, 367731), (63, 286013), (91, 198009), (117, 154007), (147, 122577), (273, 66003), (343, 52533), (441, 40859), (449, 40131), (637, 28287), (819, 22001), (1029, 17511), (1347, 13377), (1911, 9429), (3087, 5837), (3143, 5733), (4041, 4459)]