20809870984

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{43427}}^1$

素因数の和:43682

約数の個数: 64

約数和(自身を含む): 45859968000

約数和(自身を除く): 25050097016

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 199, 301, 344, 398, 602, 796, 1204, 1393, 1592, 2408, 2786, 5572, 8557, 11144, 17114, 34228, 43427, 59899, 68456, 86854, 119798, 173708, 239596, 303989, 347416, 479192, 607978, 1215956, 1867361, 2431912, 3734722, 7469444, 8641973, 13071527, 14938888, 17283946, 26143054, 34567892, 52286108, 60493811, 69135784, 104572216, 120987622, 241975244, 371604839, 483950488, 743209678, 1486419356, 2601233873, 2972838712, 5202467746, 10404935492, 20809870984]

約数ペア:

[(1, 20809870984), (2, 10404935492), (4, 5202467746), (7, 2972838712), (8, 2601233873), (14, 1486419356), (28, 743209678), (43, 483950488), (56, 371604839), (86, 241975244), (172, 120987622), (199, 104572216), (301, 69135784), (344, 60493811), (398, 52286108), (602, 34567892), (796, 26143054), (1204, 17283946), (1393, 14938888), (1592, 13071527), (2408, 8641973), (2786, 7469444), (5572, 3734722), (8557, 2431912), (11144, 1867361), (17114, 1215956), (34228, 607978), (43427, 479192), (59899, 347416), (68456, 303989), (86854, 239596), (119798, 173708)]