81607589

素因数分解:

$7^4\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:898

約数の個数: 20

約数和(自身を含む): 97642860

約数和(自身を除く): 16035271

約数列:

[1, 7, 41, 49, 287, 343, 829, 2009, 2401, 5803, 14063, 33989, 40621, 98441, 237923, 284347, 1665461, 1990429, 11658227, 81607589]

約数ペア:

[(1, 81607589), (7, 11658227), (41, 1990429), (49, 1665461), (287, 284347), (343, 237923), (829, 98441), (2009, 40621), (2401, 33989), (5803, 14063)]