257721660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1493}}^1$

素因数の和:1652

約数の個数: 144

約数和(自身を含む): 900559296

約数和(自身を除く): 642837636

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 137, 140, 180, 210, 252, 274, 315, 411, 420, 548, 630, 685, 822, 959, 1233, 1260, 1370, 1493, 1644, 1918, 2055, 2466, 2740, 2877, 2986, 3836, 4110, 4479, 4795, 4932, 5754, 5972, 6165, 7465, 8220, 8631, 8958, 9590, 10451, 11508, 12330, 13437, 14385, 14930, 17262, 17916, 19180, 20902, 22395, 24660, 26874, 28770, 29860, 31353, 34524, 41804, 43155, 44790, 52255, 53748, 57540, 62706, 67185, 86310, 89580, 94059, 104510, 125412, 134370, 156765, 172620, 188118, 204541, 209020, 268740, 313530, 376236, 409082, 470295, 613623, 627060, 818164, 940590, 1022705, 1227246, 1431787, 1840869, 1881180, 2045410, 2454492, 2863574, 3068115, 3681738, 4090820, 4295361, 5727148, 6136230, 7158935, 7363476, 8590722, 9204345, 12272460, 12886083, 14317870, 17181444, 18408690, 21476805, 25772166, 28635740, 36817380, 42953610, 51544332, 64430415, 85907220, 128860830, 257721660]

約数ペア:

[(1, 257721660), (2, 128860830), (3, 85907220), (4, 64430415), (5, 51544332), (6, 42953610), (7, 36817380), (9, 28635740), (10, 25772166), (12, 21476805), (14, 18408690), (15, 17181444), (18, 14317870), (20, 12886083), (21, 12272460), (28, 9204345), (30, 8590722), (35, 7363476), (36, 7158935), (42, 6136230), (45, 5727148), (60, 4295361), (63, 4090820), (70, 3681738), (84, 3068115), (90, 2863574), (105, 2454492), (126, 2045410), (137, 1881180), (140, 1840869), (180, 1431787), (210, 1227246), (252, 1022705), (274, 940590), (315, 818164), (411, 627060), (420, 613623), (548, 470295), (630, 409082), (685, 376236), (822, 313530), (959, 268740), (1233, 209020), (1260, 204541), (1370, 188118), (1493, 172620), (1644, 156765), (1918, 134370), (2055, 125412), (2466, 104510), (2740, 94059), (2877, 89580), (2986, 86310), (3836, 67185), (4110, 62706), (4479, 57540), (4795, 53748), (4932, 52255), (5754, 44790), (5972, 43155), (6165, 41804), (7465, 34524), (8220, 31353), (8631, 29860), (8958, 28770), (9590, 26874), (10451, 24660), (11508, 22395), (12330, 20902), (13437, 19180), (14385, 17916), (14930, 17262)]