19776211

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 24917280

約数和(自身を除く): 5141069

約数列:

[1, 7, 13, 73, 91, 169, 229, 511, 949, 1183, 1603, 2977, 6643, 12337, 16717, 20839, 38701, 86359, 117019, 217321, 270907, 1521247, 2825173, 19776211]

約数ペア:

[(1, 19776211), (7, 2825173), (13, 1521247), (73, 270907), (91, 217321), (169, 117019), (229, 86359), (511, 38701), (949, 20839), (1183, 16717), (1603, 12337), (2977, 6643)]