20187488979

素因数分解:

$3^4\times 7^3\times {\mathrm{569}}^1\times {\mathrm{1277}}^1$

素因数の和:1879

約数の個数: 80

約数和(自身を含む): 35257464000

約数和(自身を除く): 15069975021

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 569, 1029, 1277, 1323, 1707, 3087, 3831, 3969, 3983, 5121, 8939, 9261, 11493, 11949, 15363, 26817, 27783, 27881, 34479, 35847, 46089, 62573, 80451, 83643, 103437, 107541, 187719, 195167, 241353, 250929, 322623, 438011, 563157, 585501, 724059, 726613, 752787, 1314033, 1689471, 1756503, 2179839, 2258361, 3942099, 5068413, 5086291, 5269509, 6539517, 11826297, 15258873, 15808527, 19618551, 35478891, 35604037, 45776619, 58855653, 106812111, 137329857, 249228259, 320436333, 411989571, 747684777, 961308999, 2243054331, 2883926997, 6729162993, 20187488979]

約数ペア:

[(1, 20187488979), (3, 6729162993), (7, 2883926997), (9, 2243054331), (21, 961308999), (27, 747684777), (49, 411989571), (63, 320436333), (81, 249228259), (147, 137329857), (189, 106812111), (343, 58855653), (441, 45776619), (567, 35604037), (569, 35478891), (1029, 19618551), (1277, 15808527), (1323, 15258873), (1707, 11826297), (3087, 6539517), (3831, 5269509), (3969, 5086291), (3983, 5068413), (5121, 3942099), (8939, 2258361), (9261, 2179839), (11493, 1756503), (11949, 1689471), (15363, 1314033), (26817, 752787), (27783, 726613), (27881, 724059), (34479, 585501), (35847, 563157), (46089, 438011), (62573, 322623), (80451, 250929), (83643, 241353), (103437, 195167), (107541, 187719)]