399433923

素因数分解:

$3^5\times 7^1\times {\mathrm{43}}^2\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 705589248

約数和(自身を除く): 306155325

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 127, 129, 189, 243, 301, 381, 387, 567, 889, 903, 1143, 1161, 1701, 1849, 2667, 2709, 3429, 3483, 5461, 5547, 8001, 8127, 10287, 10449, 12943, 16383, 16641, 24003, 24381, 30861, 38227, 38829, 49149, 49923, 72009, 73143, 114681, 116487, 147447, 149769, 216027, 234823, 344043, 349461, 442341, 449307, 704469, 1032129, 1048383, 1327023, 1643761, 2113407, 3096387, 3145149, 4931283, 6340221, 9289161, 14793849, 19020663, 44381547, 57061989, 133144641, 399433923]

約数ペア:

[(1, 399433923), (3, 133144641), (7, 57061989), (9, 44381547), (21, 19020663), (27, 14793849), (43, 9289161), (63, 6340221), (81, 4931283), (127, 3145149), (129, 3096387), (189, 2113407), (243, 1643761), (301, 1327023), (381, 1048383), (387, 1032129), (567, 704469), (889, 449307), (903, 442341), (1143, 349461), (1161, 344043), (1701, 234823), (1849, 216027), (2667, 149769), (2709, 147447), (3429, 116487), (3483, 114681), (5461, 73143), (5547, 72009), (8001, 49923), (8127, 49149), (10287, 38829), (10449, 38227), (12943, 30861), (16383, 24381), (16641, 24003)]