21936440

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{4003}}^1$

素因数の和:4151

約数の個数: 32

約数和(自身を含む): 49729680

約数和(自身を除く): 27793240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 4003, 5480, 8006, 16012, 20015, 32024, 40030, 80060, 160120, 548411, 1096822, 2193644, 2742055, 4387288, 5484110, 10968220, 21936440]

約数ペア:

[(1, 21936440), (2, 10968220), (4, 5484110), (5, 4387288), (8, 2742055), (10, 2193644), (20, 1096822), (40, 548411), (137, 160120), (274, 80060), (548, 40030), (685, 32024), (1096, 20015), (1370, 16012), (2740, 8006), (4003, 5480)]