638788923

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{647}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 1018967040

約数和(自身を除く): 380178117

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 239, 243, 459, 647, 717, 1377, 1941, 2151, 4063, 4131, 5823, 6453, 10999, 12189, 17469, 19359, 32997, 36567, 52407, 58077, 98991, 109701, 154633, 157221, 296973, 329103, 463899, 890919, 987309, 1391697, 2628761, 2672757, 4175091, 7886283, 12525273, 23658849, 37575819, 70976547, 212929641, 638788923]

約数ペア:

[(1, 638788923), (3, 212929641), (9, 70976547), (17, 37575819), (27, 23658849), (51, 12525273), (81, 7886283), (153, 4175091), (239, 2672757), (243, 2628761), (459, 1391697), (647, 987309), (717, 890919), (1377, 463899), (1941, 329103), (2151, 296973), (4063, 157221), (4131, 154633), (5823, 109701), (6453, 98991), (10999, 58077), (12189, 52407), (17469, 36567), (19359, 32997)]