20784597477

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{12821}}^1$

素因数の和:13106

約数の個数: 64

約数和(自身を含む): 35450265600

約数和(自身を除く): 14665668123

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 239, 323, 357, 399, 717, 969, 1673, 2261, 4063, 4541, 5019, 6783, 12189, 12821, 13623, 28441, 31787, 38463, 77197, 85323, 89747, 95361, 217957, 231591, 243599, 269241, 540379, 653871, 730797, 1525699, 1621137, 1705193, 3064219, 4141183, 4577097, 5115579, 9192657, 12423549, 21449533, 28988281, 52091723, 58220161, 64348599, 86964843, 156275169, 174660483, 364642061, 407541127, 989742737, 1093926183, 1222623381, 2969228211, 6928199159, 20784597477]

約数ペア:

[(1, 20784597477), (3, 6928199159), (7, 2969228211), (17, 1222623381), (19, 1093926183), (21, 989742737), (51, 407541127), (57, 364642061), (119, 174660483), (133, 156275169), (239, 86964843), (323, 64348599), (357, 58220161), (399, 52091723), (717, 28988281), (969, 21449533), (1673, 12423549), (2261, 9192657), (4063, 5115579), (4541, 4577097), (5019, 4141183), (6783, 3064219), (12189, 1705193), (12821, 1621137), (13623, 1525699), (28441, 730797), (31787, 653871), (38463, 540379), (77197, 269241), (85323, 243599), (89747, 231591), (95361, 217957)]