1990989

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:67

約数の個数: 72

約数和(自身を含む): 4110912

約数和(自身を除く): 2119923

約数列:

[1, 3, 7, 9, 11, 13, 17, 21, 33, 39, 51, 63, 77, 91, 99, 117, 119, 143, 153, 169, 187, 221, 231, 273, 357, 429, 507, 561, 663, 693, 819, 1001, 1071, 1183, 1287, 1309, 1521, 1547, 1683, 1859, 1989, 2431, 2873, 3003, 3549, 3927, 4641, 5577, 7293, 8619, 9009, 10647, 11781, 13013, 13923, 16731, 17017, 20111, 21879, 25857, 31603, 39039, 51051, 60333, 94809, 117117, 153153, 180999, 221221, 284427, 663663, 1990989]

約数ペア:

[(1, 1990989), (3, 663663), (7, 284427), (9, 221221), (11, 180999), (13, 153153), (17, 117117), (21, 94809), (33, 60333), (39, 51051), (51, 39039), (63, 31603), (77, 25857), (91, 21879), (99, 20111), (117, 17017), (119, 16731), (143, 13923), (153, 13013), (169, 11781), (187, 10647), (221, 9009), (231, 8619), (273, 7293), (357, 5577), (429, 4641), (507, 3927), (561, 3549), (663, 3003), (693, 2873), (819, 2431), (1001, 1989), (1071, 1859), (1183, 1683), (1287, 1547), (1309, 1521)]