19957041

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13121}}^1$

素因数の和:13153

約数の個数: 18

約数和(自身を含む): 31217238

約数和(自身を除く): 11260197

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13121, 39363, 118089, 170573, 511719, 1535157, 2217449, 6652347, 19957041]

約数ペア:

[(1, 19957041), (3, 6652347), (9, 2217449), (13, 1535157), (39, 511719), (117, 170573), (169, 118089), (507, 39363), (1521, 13121)]