128889257

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{431}}^1$

素因数の和:821

約数の個数: 24

約数和(自身を含む): 159563520

約数和(自身を除く): 30674263

約数列:

[1, 7, 17, 49, 119, 359, 431, 833, 2513, 3017, 6103, 7327, 17591, 21119, 42721, 51289, 154729, 299047, 359023, 1083103, 2630393, 7581721, 18412751, 128889257]

約数ペア:

[(1, 128889257), (7, 18412751), (17, 7581721), (49, 2630393), (119, 1083103), (359, 359023), (431, 299047), (833, 154729), (2513, 51289), (3017, 42721), (6103, 21119), (7327, 17591)]