20512125200

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61561}}^1$

素因数の和:61610

約数の個数: 180

約数和(自身を含む): 60699270132

約数和(自身を除く): 40187144932

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 25, 28, 34, 35, 40, 49, 50, 56, 68, 70, 80, 85, 98, 100, 112, 119, 136, 140, 170, 175, 196, 200, 238, 245, 272, 280, 340, 350, 392, 400, 425, 476, 490, 560, 595, 680, 700, 784, 833, 850, 952, 980, 1190, 1225, 1360, 1400, 1666, 1700, 1904, 1960, 2380, 2450, 2800, 2975, 3332, 3400, 3920, 4165, 4760, 4900, 5950, 6664, 6800, 8330, 9520, 9800, 11900, 13328, 16660, 19600, 20825, 23800, 33320, 41650, 47600, 61561, 66640, 83300, 123122, 166600, 246244, 307805, 333200, 430927, 492488, 615610, 861854, 984976, 1046537, 1231220, 1539025, 1723708, 2093074, 2154635, 2462440, 3016489, 3078050, 3447416, 4186148, 4309270, 4924880, 5232685, 6032978, 6156100, 6894832, 7325759, 8372296, 8618540, 10465370, 10773175, 12065956, 12312200, 14651518, 15082445, 16744592, 17237080, 20930740, 21546350, 24131912, 24624400, 26163425, 29303036, 30164890, 34474160, 36628795, 41861480, 43092700, 48263824, 51280313, 52326850, 58606072, 60329780, 73257590, 75412225, 83722960, 86185400, 102560626, 104653700, 117212144, 120659560, 146515180, 150824450, 172370800, 183143975, 205121252, 209307400, 241319120, 256401565, 293030360, 301648900, 366287950, 410242504, 418614800, 512803130, 586060720, 603297800, 732575900, 820485008, 1025606260, 1206595600, 1282007825, 1465151800, 2051212520, 2564015650, 2930303600, 4102425040, 5128031300, 10256062600, 20512125200]

約数ペア:

[(1, 20512125200), (2, 10256062600), (4, 5128031300), (5, 4102425040), (7, 2930303600), (8, 2564015650), (10, 2051212520), (14, 1465151800), (16, 1282007825), (17, 1206595600), (20, 1025606260), (25, 820485008), (28, 732575900), (34, 603297800), (35, 586060720), (40, 512803130), (49, 418614800), (50, 410242504), (56, 366287950), (68, 301648900), (70, 293030360), (80, 256401565), (85, 241319120), (98, 209307400), (100, 205121252), (112, 183143975), (119, 172370800), (136, 150824450), (140, 146515180), (170, 120659560), (175, 117212144), (196, 104653700), (200, 102560626), (238, 86185400), (245, 83722960), (272, 75412225), (280, 73257590), (340, 60329780), (350, 58606072), (392, 52326850), (400, 51280313), (425, 48263824), (476, 43092700), (490, 41861480), (560, 36628795), (595, 34474160), (680, 30164890), (700, 29303036), (784, 26163425), (833, 24624400), (850, 24131912), (952, 21546350), (980, 20930740), (1190, 17237080), (1225, 16744592), (1360, 15082445), (1400, 14651518), (1666, 12312200), (1700, 12065956), (1904, 10773175), (1960, 10465370), (2380, 8618540), (2450, 8372296), (2800, 7325759), (2975, 6894832), (3332, 6156100), (3400, 6032978), (3920, 5232685), (4165, 4924880), (4760, 4309270), (4900, 4186148), (5950, 3447416), (6664, 3078050), (6800, 3016489), (8330, 2462440), (9520, 2154635), (9800, 2093074), (11900, 1723708), (13328, 1539025), (16660, 1231220), (19600, 1046537), (20825, 984976), (23800, 861854), (33320, 615610), (41650, 492488), (47600, 430927), (61561, 333200), (66640, 307805), (83300, 246244), (123122, 166600)]