20753901

素因数分解:

$3^6\times 7^3\times {\mathrm{83}}^1$

素因数の和:122

約数の個数: 56

約数和(自身を含む): 36724800

約数和(自身を除く): 15970899

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 83, 147, 189, 243, 249, 343, 441, 567, 581, 729, 747, 1029, 1323, 1701, 1743, 2241, 3087, 3969, 4067, 5103, 5229, 6723, 9261, 11907, 12201, 15687, 20169, 27783, 28469, 35721, 36603, 47061, 60507, 83349, 85407, 109809, 141183, 250047, 256221, 329427, 423549, 768663, 988281, 2305989, 2964843, 6917967, 20753901]

約数ペア:

[(1, 20753901), (3, 6917967), (7, 2964843), (9, 2305989), (21, 988281), (27, 768663), (49, 423549), (63, 329427), (81, 256221), (83, 250047), (147, 141183), (189, 109809), (243, 85407), (249, 83349), (343, 60507), (441, 47061), (567, 36603), (581, 35721), (729, 28469), (747, 27783), (1029, 20169), (1323, 15687), (1701, 12201), (1743, 11907), (2241, 9261), (3087, 6723), (3969, 5229), (4067, 5103)]