389917311

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{2207}}^1$

素因数の和:2443

約数の個数: 32

約数和(自身を含む): 610467840

約数和(自身を除く): 220550529

約数列:

[1, 3, 7, 21, 47, 141, 179, 329, 537, 987, 1253, 2207, 3759, 6621, 8413, 15449, 25239, 46347, 58891, 103729, 176673, 311187, 395053, 726103, 1185159, 2178309, 2765371, 8296113, 18567491, 55702473, 129972437, 389917311]

約数ペア:

[(1, 389917311), (3, 129972437), (7, 55702473), (21, 18567491), (47, 8296113), (141, 2765371), (179, 2178309), (329, 1185159), (537, 726103), (987, 395053), (1253, 311187), (2207, 176673), (3759, 103729), (6621, 58891), (8413, 46347), (15449, 25239)]