128781656

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1973}}^1$

素因数の和:2219

約数の個数: 32

約数和(自身を含む): 248724000

約数和(自身を除く): 119942344

約数列:

[1, 2, 4, 8, 41, 82, 164, 199, 328, 398, 796, 1592, 1973, 3946, 7892, 8159, 15784, 16318, 32636, 65272, 80893, 161786, 323572, 392627, 647144, 785254, 1570508, 3141016, 16097707, 32195414, 64390828, 128781656]

約数ペア:

[(1, 128781656), (2, 64390828), (4, 32195414), (8, 16097707), (41, 3141016), (82, 1570508), (164, 785254), (199, 647144), (328, 392627), (398, 323572), (796, 161786), (1592, 80893), (1973, 65272), (3946, 32636), (7892, 16318), (8159, 15784)]