20819259

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1051}}^1$

素因数の和:1159

約数の個数: 24

約数和(自身を含む): 31509504

約数和(自身を除く): 10690245

約数列:

[1, 3, 9, 31, 71, 93, 213, 279, 639, 1051, 2201, 3153, 6603, 9459, 19809, 32581, 74621, 97743, 223863, 293229, 671589, 2313251, 6939753, 20819259]

約数ペア:

[(1, 20819259), (3, 6939753), (9, 2313251), (31, 671589), (71, 293229), (93, 223863), (213, 97743), (279, 74621), (639, 32581), (1051, 19809), (2201, 9459), (3153, 6603)]