19864805

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{317}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 24361344

約数和(自身を除く): 4496539

約数列:

[1, 5, 83, 151, 317, 415, 755, 1585, 12533, 26311, 47867, 62665, 131555, 239335, 3972961, 19864805]

約数ペア:

[(1, 19864805), (5, 3972961), (83, 239335), (151, 131555), (317, 62665), (415, 47867), (755, 26311), (1585, 12533)]