19530040

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1399}}^1$

素因数の和:1759

約数の個数: 32

約数和(自身を含む): 44100000

約数和(自身を除く): 24569960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1399, 1745, 2792, 2798, 3490, 5596, 6980, 6995, 11192, 13960, 13990, 27980, 55960, 488251, 976502, 1953004, 2441255, 3906008, 4882510, 9765020, 19530040]

約数ペア:

[(1, 19530040), (2, 9765020), (4, 4882510), (5, 3906008), (8, 2441255), (10, 1953004), (20, 976502), (40, 488251), (349, 55960), (698, 27980), (1396, 13990), (1399, 13960), (1745, 11192), (2792, 6995), (2798, 6980), (3490, 5596)]