638841606

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{20947}}^1$

素因数の和:21005

約数の個数: 64

約数和(自身を含む): 1520322048

約数和(自身を除く): 881480442

約数列:

[1, 2, 3, 6, 13, 17, 23, 26, 34, 39, 46, 51, 69, 78, 102, 138, 221, 299, 391, 442, 598, 663, 782, 897, 1173, 1326, 1794, 2346, 5083, 10166, 15249, 20947, 30498, 41894, 62841, 125682, 272311, 356099, 481781, 544622, 712198, 816933, 963562, 1068297, 1445343, 1633866, 2136594, 2890686, 4629287, 6263153, 8190277, 9258574, 12526306, 13887861, 16380554, 18789459, 24570831, 27775722, 37578918, 49141662, 106473601, 212947202, 319420803, 638841606]

約数ペア:

[(1, 638841606), (2, 319420803), (3, 212947202), (6, 106473601), (13, 49141662), (17, 37578918), (23, 27775722), (26, 24570831), (34, 18789459), (39, 16380554), (46, 13887861), (51, 12526306), (69, 9258574), (78, 8190277), (102, 6263153), (138, 4629287), (221, 2890686), (299, 2136594), (391, 1633866), (442, 1445343), (598, 1068297), (663, 963562), (782, 816933), (897, 712198), (1173, 544622), (1326, 481781), (1794, 356099), (2346, 272311), (5083, 125682), (10166, 62841), (15249, 41894), (20947, 30498)]