128781646

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 240869376

約数和(自身を除く): 112087730

約数列:

[1, 2, 7, 14, 23, 43, 46, 71, 86, 131, 142, 161, 262, 301, 322, 497, 602, 917, 989, 994, 1633, 1834, 1978, 3013, 3053, 3266, 5633, 6026, 6106, 6923, 9301, 11266, 11431, 13846, 18602, 21091, 21371, 22862, 39431, 42182, 42742, 65107, 70219, 78862, 129559, 130214, 140438, 213923, 259118, 399943, 427846, 491533, 799886, 906913, 983066, 1497461, 1813826, 2799601, 2994922, 5599202, 9198689, 18397378, 64390823, 128781646]

約数ペア:

[(1, 128781646), (2, 64390823), (7, 18397378), (14, 9198689), (23, 5599202), (43, 2994922), (46, 2799601), (71, 1813826), (86, 1497461), (131, 983066), (142, 906913), (161, 799886), (262, 491533), (301, 427846), (322, 399943), (497, 259118), (602, 213923), (917, 140438), (989, 130214), (994, 129559), (1633, 78862), (1834, 70219), (1978, 65107), (3013, 42742), (3053, 42182), (3266, 39431), (5633, 22862), (6026, 21371), (6106, 21091), (6923, 18602), (9301, 13846), (11266, 11431)]