18642897

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 35627904

約数和(自身を除く): 16985007

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 103, 117, 119, 153, 169, 221, 273, 309, 357, 507, 663, 721, 819, 927, 1071, 1183, 1339, 1521, 1547, 1751, 1989, 2163, 2873, 3549, 4017, 4641, 5253, 6489, 8619, 9373, 10647, 12051, 12257, 13923, 15759, 17407, 20111, 22763, 25857, 28119, 36771, 52221, 60333, 68289, 84357, 110313, 121849, 156663, 159341, 180999, 204867, 295919, 365547, 478023, 887757, 1096641, 1434069, 2071433, 2663271, 6214299, 18642897]

約数ペア:

[(1, 18642897), (3, 6214299), (7, 2663271), (9, 2071433), (13, 1434069), (17, 1096641), (21, 887757), (39, 478023), (51, 365547), (63, 295919), (91, 204867), (103, 180999), (117, 159341), (119, 156663), (153, 121849), (169, 110313), (221, 84357), (273, 68289), (309, 60333), (357, 52221), (507, 36771), (663, 28119), (721, 25857), (819, 22763), (927, 20111), (1071, 17407), (1183, 15759), (1339, 13923), (1521, 12257), (1547, 12051), (1751, 10647), (1989, 9373), (2163, 8619), (2873, 6489), (3549, 5253), (4017, 4641)]