209215984

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{4283}}^1$

素因数の和:4405

約数の個数: 40

約数和(自身を含む): 420723072

約数和(自身を除く): 211507088

約数列:

[1, 2, 4, 8, 16, 43, 71, 86, 142, 172, 284, 344, 568, 688, 1136, 3053, 4283, 6106, 8566, 12212, 17132, 24424, 34264, 48848, 68528, 184169, 304093, 368338, 608186, 736676, 1216372, 1473352, 2432744, 2946704, 4865488, 13075999, 26151998, 52303996, 104607992, 209215984]

約数ペア:

[(1, 209215984), (2, 104607992), (4, 52303996), (8, 26151998), (16, 13075999), (43, 4865488), (71, 2946704), (86, 2432744), (142, 1473352), (172, 1216372), (284, 736676), (344, 608186), (568, 368338), (688, 304093), (1136, 184169), (3053, 68528), (4283, 48848), (6106, 34264), (8566, 24424), (12212, 17132)]