204205840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 485683200

約数和(自身を除く): 281477360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 127, 199, 202, 254, 398, 404, 505, 508, 635, 796, 808, 995, 1010, 1016, 1270, 1592, 1616, 1990, 2020, 2032, 2540, 3184, 3980, 4040, 5080, 7960, 8080, 10160, 12827, 15920, 20099, 25273, 25654, 40198, 50546, 51308, 64135, 80396, 100495, 101092, 102616, 126365, 128270, 160792, 200990, 202184, 205232, 252730, 256540, 321584, 401980, 404368, 505460, 513080, 803960, 1010920, 1026160, 1607920, 2021840, 2552573, 5105146, 10210292, 12762865, 20420584, 25525730, 40841168, 51051460, 102102920, 204205840]

約数ペア:

[(1, 204205840), (2, 102102920), (4, 51051460), (5, 40841168), (8, 25525730), (10, 20420584), (16, 12762865), (20, 10210292), (40, 5105146), (80, 2552573), (101, 2021840), (127, 1607920), (199, 1026160), (202, 1010920), (254, 803960), (398, 513080), (404, 505460), (505, 404368), (508, 401980), (635, 321584), (796, 256540), (808, 252730), (995, 205232), (1010, 202184), (1016, 200990), (1270, 160792), (1592, 128270), (1616, 126365), (1990, 102616), (2020, 101092), (2032, 100495), (2540, 80396), (3184, 64135), (3980, 51308), (4040, 50546), (5080, 40198), (7960, 25654), (8080, 25273), (10160, 20099), (12827, 15920)]