218974287

素因数分解:

$3^1\times 7^3\times {\mathrm{241}}^1\times {\mathrm{883}}^1$

素因数の和:1148

約数の個数: 32

約数和(自身を含む): 342284800

約数和(自身を除く): 123310513

約数列:

[1, 3, 7, 21, 49, 147, 241, 343, 723, 883, 1029, 1687, 2649, 5061, 6181, 11809, 18543, 35427, 43267, 82663, 129801, 212803, 247989, 302869, 638409, 908607, 1489621, 4468863, 10427347, 31282041, 72991429, 218974287]

約数ペア:

[(1, 218974287), (3, 72991429), (7, 31282041), (21, 10427347), (49, 4468863), (147, 1489621), (241, 908607), (343, 638409), (723, 302869), (883, 247989), (1029, 212803), (1687, 129801), (2649, 82663), (5061, 43267), (6181, 35427), (11809, 18543)]