20661771

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 30252096

約数和(自身を除く): 9590325

約数列:

[1, 3, 13, 39, 83, 169, 249, 491, 507, 1079, 1473, 3237, 6383, 14027, 19149, 40753, 42081, 82979, 122259, 248937, 529789, 1589367, 6887257, 20661771]

約数ペア:

[(1, 20661771), (3, 6887257), (13, 1589367), (39, 529789), (83, 248937), (169, 122259), (249, 82979), (491, 42081), (507, 40753), (1079, 19149), (1473, 14027), (3237, 6383)]