128781378

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20981}}^1$

素因数の和:21031

約数の個数: 48

約数和(自身を含む): 314226432

約数和(自身を除く): 185445054

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 31, 33, 62, 66, 93, 99, 186, 198, 279, 341, 558, 682, 1023, 2046, 3069, 6138, 20981, 41962, 62943, 125886, 188829, 230791, 377658, 461582, 650411, 692373, 1300822, 1384746, 1951233, 2077119, 3902466, 4154238, 5853699, 7154521, 11707398, 14309042, 21463563, 42927126, 64390689, 128781378]

約数ペア:

[(1, 128781378), (2, 64390689), (3, 42927126), (6, 21463563), (9, 14309042), (11, 11707398), (18, 7154521), (22, 5853699), (31, 4154238), (33, 3902466), (62, 2077119), (66, 1951233), (93, 1384746), (99, 1300822), (186, 692373), (198, 650411), (279, 461582), (341, 377658), (558, 230791), (682, 188829), (1023, 125886), (2046, 62943), (3069, 41962), (6138, 20981)]