20484009

素因数分解:

$3^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:436

約数の個数: 60

約数和(自身を含む): 38430084

約数和(自身を除く): 17946075

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 81, 91, 117, 147, 189, 273, 351, 397, 441, 567, 637, 819, 1053, 1191, 1323, 1911, 2457, 2779, 3573, 3969, 5161, 5733, 7371, 8337, 10719, 15483, 17199, 19453, 25011, 32157, 36127, 46449, 51597, 58359, 75033, 108381, 139347, 175077, 225099, 252889, 325143, 418041, 525231, 758667, 975429, 1575693, 2276001, 2926287, 6828003, 20484009]

約数ペア:

[(1, 20484009), (3, 6828003), (7, 2926287), (9, 2276001), (13, 1575693), (21, 975429), (27, 758667), (39, 525231), (49, 418041), (63, 325143), (81, 252889), (91, 225099), (117, 175077), (147, 139347), (189, 108381), (273, 75033), (351, 58359), (397, 51597), (441, 46449), (567, 36127), (637, 32157), (819, 25011), (1053, 19453), (1191, 17199), (1323, 15483), (1911, 10719), (2457, 8337), (2779, 7371), (3573, 5733), (3969, 5161)]