21210651

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 38658048

約数和(自身を除く): 17447397

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 127, 231, 241, 381, 693, 723, 889, 1143, 1397, 1687, 2169, 2651, 2667, 4191, 5061, 7953, 8001, 9779, 12573, 15183, 18557, 23859, 29337, 30607, 55671, 88011, 91821, 167013, 214249, 275463, 336677, 642747, 1010031, 1928241, 2356739, 3030093, 7070217, 21210651]

約数ペア:

[(1, 21210651), (3, 7070217), (7, 3030093), (9, 2356739), (11, 1928241), (21, 1010031), (33, 642747), (63, 336677), (77, 275463), (99, 214249), (127, 167013), (231, 91821), (241, 88011), (381, 55671), (693, 30607), (723, 29337), (889, 23859), (1143, 18557), (1397, 15183), (1687, 12573), (2169, 9779), (2651, 8001), (2667, 7953), (4191, 5061)]