21219202

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:258

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 13306238

約数列:

[1, 2, 23, 46, 71, 73, 89, 142, 146, 178, 1633, 1679, 2047, 3266, 3358, 4094, 5183, 6319, 6497, 10366, 12638, 12994, 119209, 145337, 149431, 238418, 290674, 298862, 461287, 922574, 10609601, 21219202]

約数ペア:

[(1, 21219202), (2, 10609601), (23, 922574), (46, 461287), (71, 298862), (73, 290674), (89, 238418), (142, 149431), (146, 145337), (178, 119209), (1633, 12994), (1679, 12638), (2047, 10366), (3266, 6497), (3358, 6319), (4094, 5183)]