1990991570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1\times {\mathrm{593}}^1$

素因数の和:1091

約数の個数: 64

約数和(自身を含む): 3879912960

約数和(自身を除く): 1888921390

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 431, 593, 779, 862, 1186, 1558, 2155, 2965, 3895, 4310, 5930, 7790, 8189, 11267, 16378, 17671, 22534, 24313, 35342, 40945, 48626, 56335, 81890, 88355, 112670, 121565, 176710, 243130, 255583, 335749, 461947, 511166, 671498, 923894, 1277915, 1678745, 2309735, 2555830, 3357490, 4619470, 4856077, 9712154, 10478903, 20957806, 24280385, 48560770, 52394515, 104789030, 199099157, 398198314, 995495785, 1990991570]

約数ペア:

[(1, 1990991570), (2, 995495785), (5, 398198314), (10, 199099157), (19, 104789030), (38, 52394515), (41, 48560770), (82, 24280385), (95, 20957806), (190, 10478903), (205, 9712154), (410, 4856077), (431, 4619470), (593, 3357490), (779, 2555830), (862, 2309735), (1186, 1678745), (1558, 1277915), (2155, 923894), (2965, 671498), (3895, 511166), (4310, 461947), (5930, 335749), (7790, 255583), (8189, 243130), (11267, 176710), (16378, 121565), (17671, 112670), (22534, 88355), (24313, 81890), (35342, 56335), (40945, 48626)]