20977980660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1280707}}^1$

素因数の和:1280742

約数の個数: 144

約数和(自身を含む): 78317855616

約数和(自身を除く): 57339874956

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 16380, 1280707, 2561414, 3842121, 5122828, 6403535, 7684242, 8964949, 11526363, 12807070, 15368484, 16649191, 17929898, 19210605, 23052726, 25614140, 26894847, 33298382, 35859796, 38421210, 44824745, 46105452, 49947573, 53789694, 57631815, 66596764, 76842420, 80684541, 83245955, 89649490, 99895146, 107579388, 115263630, 116544337, 134474235, 149842719, 161369082, 166491910, 179298980, 199790292, 230527260, 233088674, 249737865, 268948470, 299685438, 322738164, 332983820, 349633011, 403422705, 466177348, 499475730, 537896940, 582721685, 599370876, 699266022, 749213595, 806845410, 998951460, 1048899033, 1165443370, 1398532044, 1498427190, 1613690820, 1748165055, 2097798066, 2330886740, 2996854380, 3496330110, 4195596132, 5244495165, 6992660220, 10488990330, 20977980660]

約数ペア:

[(1, 20977980660), (2, 10488990330), (3, 6992660220), (4, 5244495165), (5, 4195596132), (6, 3496330110), (7, 2996854380), (9, 2330886740), (10, 2097798066), (12, 1748165055), (13, 1613690820), (14, 1498427190), (15, 1398532044), (18, 1165443370), (20, 1048899033), (21, 998951460), (26, 806845410), (28, 749213595), (30, 699266022), (35, 599370876), (36, 582721685), (39, 537896940), (42, 499475730), (45, 466177348), (52, 403422705), (60, 349633011), (63, 332983820), (65, 322738164), (70, 299685438), (78, 268948470), (84, 249737865), (90, 233088674), (91, 230527260), (105, 199790292), (117, 179298980), (126, 166491910), (130, 161369082), (140, 149842719), (156, 134474235), (180, 116544337), (182, 115263630), (195, 107579388), (210, 99895146), (234, 89649490), (252, 83245955), (260, 80684541), (273, 76842420), (315, 66596764), (364, 57631815), (390, 53789694), (420, 49947573), (455, 46105452), (468, 44824745), (546, 38421210), (585, 35859796), (630, 33298382), (780, 26894847), (819, 25614140), (910, 23052726), (1092, 19210605), (1170, 17929898), (1260, 16649191), (1365, 15368484), (1638, 12807070), (1820, 11526363), (2340, 8964949), (2730, 7684242), (3276, 6403535), (4095, 5122828), (5460, 3842121), (8190, 2561414), (16380, 1280707)]