20688525820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{431}}^1\times {\mathrm{2141}}^1$

素因数の和:2659

約数の個数: 96

約数和(自身を含む): 46637337600

約数和(自身を除く): 25948811780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 431, 590, 862, 1121, 1180, 1724, 2141, 2155, 2242, 4282, 4310, 4484, 5605, 8189, 8564, 8620, 10705, 11210, 16378, 21410, 22420, 25429, 32756, 40679, 40945, 42820, 50858, 81358, 81890, 101716, 126319, 127145, 162716, 163780, 203395, 252638, 254290, 406790, 483151, 505276, 508580, 631595, 813580, 922771, 966302, 1263190, 1845542, 1932604, 2400061, 2415755, 2526380, 3691084, 4613855, 4800122, 4831510, 9227710, 9600244, 9663020, 12000305, 17532649, 18455420, 24000610, 35065298, 48001220, 54443489, 70130596, 87663245, 108886978, 175326490, 217773956, 272217445, 350652980, 544434890, 1034426291, 1088869780, 2068852582, 4137705164, 5172131455, 10344262910, 20688525820]

約数ペア:

[(1, 20688525820), (2, 10344262910), (4, 5172131455), (5, 4137705164), (10, 2068852582), (19, 1088869780), (20, 1034426291), (38, 544434890), (59, 350652980), (76, 272217445), (95, 217773956), (118, 175326490), (190, 108886978), (236, 87663245), (295, 70130596), (380, 54443489), (431, 48001220), (590, 35065298), (862, 24000610), (1121, 18455420), (1180, 17532649), (1724, 12000305), (2141, 9663020), (2155, 9600244), (2242, 9227710), (4282, 4831510), (4310, 4800122), (4484, 4613855), (5605, 3691084), (8189, 2526380), (8564, 2415755), (8620, 2400061), (10705, 1932604), (11210, 1845542), (16378, 1263190), (21410, 966302), (22420, 922771), (25429, 813580), (32756, 631595), (40679, 508580), (40945, 505276), (42820, 483151), (50858, 406790), (81358, 254290), (81890, 252638), (101716, 203395), (126319, 163780), (127145, 162716)]