20782489

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1667}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 25780608

約数和(自身を除く): 4998119

約数列:

[1, 7, 13, 91, 137, 959, 1667, 1781, 11669, 12467, 21671, 151697, 228379, 1598653, 2968927, 20782489]

約数ペア:

[(1, 20782489), (7, 2968927), (13, 1598653), (91, 228379), (137, 151697), (959, 21671), (1667, 12467), (1781, 11669)]