18565519885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{1997}}^1$

素因数の和:2254

約数の個数: 64

約数和(自身を含む): 26329100544

約数和(自身を除く): 7763580659

約数列:

[1, 5, 11, 17, 55, 61, 85, 163, 187, 305, 671, 815, 935, 1037, 1793, 1997, 2771, 3355, 5185, 8965, 9943, 9985, 11407, 13855, 21967, 30481, 33949, 49715, 57035, 109373, 109835, 121817, 152405, 169031, 169745, 325511, 373439, 546865, 609085, 845155, 1339987, 1627555, 1859341, 1867195, 2070889, 3580621, 5533687, 6699935, 9296705, 10354445, 17903105, 19856171, 22779779, 27668435, 60870557, 99280855, 113898895, 218417881, 304352785, 337554907, 1092089405, 1687774535, 3713103977, 18565519885]

約数ペア:

[(1, 18565519885), (5, 3713103977), (11, 1687774535), (17, 1092089405), (55, 337554907), (61, 304352785), (85, 218417881), (163, 113898895), (187, 99280855), (305, 60870557), (671, 27668435), (815, 22779779), (935, 19856171), (1037, 17903105), (1793, 10354445), (1997, 9296705), (2771, 6699935), (3355, 5533687), (5185, 3580621), (8965, 2070889), (9943, 1867195), (9985, 1859341), (11407, 1627555), (13855, 1339987), (21967, 845155), (30481, 609085), (33949, 546865), (49715, 373439), (57035, 325511), (109373, 169745), (109835, 169031), (121817, 152405)]