19810054

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{937}}^1$

素因数の和:1012

約数の個数: 24

約数和(自身を含む): 33531624

約数和(自身を除く): 13721570

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 937, 961, 1874, 1922, 10307, 10571, 20614, 21142, 29047, 58094, 319517, 639034, 900457, 1800914, 9905027, 19810054]

約数ペア:

[(1, 19810054), (2, 9905027), (11, 1800914), (22, 900457), (31, 639034), (62, 319517), (341, 58094), (682, 29047), (937, 21142), (961, 20614), (1874, 10571), (1922, 10307)]