20512781476

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{839}}^1\times {\mathrm{555661}}^1$

素因数の和:556515

約数の個数: 24

約数和(自身を含む): 39207510720

約数和(自身を除く): 18694729244

約数列:

[1, 2, 4, 11, 22, 44, 839, 1678, 3356, 9229, 18458, 36916, 555661, 1111322, 2222644, 6112271, 12224542, 24449084, 466199579, 932399158, 1864798316, 5128195369, 10256390738, 20512781476]

約数ペア:

[(1, 20512781476), (2, 10256390738), (4, 5128195369), (11, 1864798316), (22, 932399158), (44, 466199579), (839, 24449084), (1678, 12224542), (3356, 6112271), (9229, 2222644), (18458, 1111322), (36916, 555661)]