388640889

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{431}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 712212480

約数和(自身を除く): 323571591

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 367, 431, 819, 1101, 1293, 2457, 2569, 3017, 3303, 3879, 4771, 5603, 7707, 9051, 9909, 11637, 14313, 16809, 23121, 27153, 33397, 39221, 42939, 50427, 69363, 81459, 100191, 117663, 128817, 151281, 158177, 300573, 352989, 474531, 901719, 1058967, 1107239, 1423593, 2056301, 3321717, 4270779, 6168903, 9965151, 14394107, 18506709, 29895453, 43182321, 55520127, 129546963, 388640889]

約数ペア:

[(1, 388640889), (3, 129546963), (7, 55520127), (9, 43182321), (13, 29895453), (21, 18506709), (27, 14394107), (39, 9965151), (63, 6168903), (91, 4270779), (117, 3321717), (189, 2056301), (273, 1423593), (351, 1107239), (367, 1058967), (431, 901719), (819, 474531), (1101, 352989), (1293, 300573), (2457, 158177), (2569, 151281), (3017, 128817), (3303, 117663), (3879, 100191), (4771, 81459), (5603, 69363), (7707, 50427), (9051, 42939), (9909, 39221), (11637, 33397), (14313, 27153), (16809, 23121)]