18420129

素因数分解:

$3^5\times 7^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:66

約数の個数: 96

約数和(自身を含む): 36691200

約数和(自身を除く): 18271071

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 49, 51, 63, 81, 91, 117, 119, 147, 153, 189, 221, 243, 273, 343, 351, 357, 441, 459, 567, 637, 663, 819, 833, 1029, 1053, 1071, 1323, 1377, 1547, 1701, 1911, 1989, 2457, 2499, 3087, 3159, 3213, 3969, 4131, 4459, 4641, 5733, 5831, 5967, 7371, 7497, 9261, 9639, 10829, 11907, 13377, 13923, 17199, 17493, 17901, 22113, 22491, 27783, 28917, 32487, 40131, 41769, 51597, 52479, 53703, 67473, 75803, 83349, 97461, 120393, 125307, 154791, 157437, 202419, 227409, 292383, 361179, 375921, 472311, 682227, 877149, 1083537, 1416933, 2046681, 2631447, 6140043, 18420129]

約数ペア:

[(1, 18420129), (3, 6140043), (7, 2631447), (9, 2046681), (13, 1416933), (17, 1083537), (21, 877149), (27, 682227), (39, 472311), (49, 375921), (51, 361179), (63, 292383), (81, 227409), (91, 202419), (117, 157437), (119, 154791), (147, 125307), (153, 120393), (189, 97461), (221, 83349), (243, 75803), (273, 67473), (343, 53703), (351, 52479), (357, 51597), (441, 41769), (459, 40131), (567, 32487), (637, 28917), (663, 27783), (819, 22491), (833, 22113), (1029, 17901), (1053, 17493), (1071, 17199), (1323, 13923), (1377, 13377), (1547, 11907), (1701, 10829), (1911, 9639), (1989, 9261), (2457, 7497), (2499, 7371), (3087, 5967), (3159, 5831), (3213, 5733), (3969, 4641), (4131, 4459)]