208078403920

素因数分解:

$2^4\times 5^1\times {\mathrm{2600980049}}^1$

素因数の和:2600980062

約数の個数: 20

約数和(自身を含む): 483782289300

約数和(自身を除く): 275703885380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2600980049, 5201960098, 10403920196, 13004900245, 20807840392, 26009800490, 41615680784, 52019600980, 104039201960, 208078403920]

約数ペア:

[(1, 208078403920), (2, 104039201960), (4, 52019600980), (5, 41615680784), (8, 26009800490), (10, 20807840392), (16, 13004900245), (20, 10403920196), (40, 5201960098), (80, 2600980049)]