20448009

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{607}}^1$

素因数の和:829

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10851831

約数列:

[1, 3, 9, 19, 57, 171, 197, 591, 607, 1773, 1821, 3743, 5463, 11229, 11533, 33687, 34599, 103797, 119579, 358737, 1076211, 2272001, 6816003, 20448009]

約数ペア:

[(1, 20448009), (3, 6816003), (9, 2272001), (19, 1076211), (57, 358737), (171, 119579), (197, 103797), (591, 34599), (607, 33687), (1773, 11533), (1821, 11229), (3743, 5463)]