20199644420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{587}}^1\times {\mathrm{661}}^1$

素因数の和:1413

約数の個数: 96

約数和(自身を含む): 45122555520

約数和(自身を除く): 24922911100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 380, 548, 587, 661, 685, 1174, 1322, 1370, 2348, 2603, 2644, 2740, 2935, 3305, 5206, 5870, 6610, 10412, 11153, 11740, 12559, 13015, 13220, 22306, 25118, 26030, 44612, 50236, 52060, 55765, 62795, 80419, 90557, 111530, 125590, 160838, 181114, 223060, 251180, 321676, 362228, 388007, 402095, 452785, 776014, 804190, 905570, 1527961, 1552028, 1608380, 1720583, 1811140, 1940035, 3055922, 3441166, 3880070, 6111844, 6882332, 7372133, 7639805, 7760140, 8602915, 14744266, 15279610, 17205830, 29488532, 30559220, 34411660, 36860665, 53156959, 73721330, 106313918, 147442660, 212627836, 265784795, 531569590, 1009982221, 1063139180, 2019964442, 4039928884, 5049911105, 10099822210, 20199644420]

約数ペア:

[(1, 20199644420), (2, 10099822210), (4, 5049911105), (5, 4039928884), (10, 2019964442), (19, 1063139180), (20, 1009982221), (38, 531569590), (76, 265784795), (95, 212627836), (137, 147442660), (190, 106313918), (274, 73721330), (380, 53156959), (548, 36860665), (587, 34411660), (661, 30559220), (685, 29488532), (1174, 17205830), (1322, 15279610), (1370, 14744266), (2348, 8602915), (2603, 7760140), (2644, 7639805), (2740, 7372133), (2935, 6882332), (3305, 6111844), (5206, 3880070), (5870, 3441166), (6610, 3055922), (10412, 1940035), (11153, 1811140), (11740, 1720583), (12559, 1608380), (13015, 1552028), (13220, 1527961), (22306, 905570), (25118, 804190), (26030, 776014), (44612, 452785), (50236, 402095), (52060, 388007), (55765, 362228), (62795, 321676), (80419, 251180), (90557, 223060), (111530, 181114), (125590, 160838)]