81389217

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 151787520

約数和(自身を除く): 70398303

約数列:

[1, 3, 7, 13, 17, 19, 21, 39, 51, 57, 71, 91, 119, 133, 169, 213, 221, 247, 273, 323, 357, 399, 497, 507, 663, 741, 923, 969, 1183, 1207, 1349, 1491, 1547, 1729, 2261, 2769, 2873, 3211, 3549, 3621, 4047, 4199, 4641, 5187, 6461, 6783, 8449, 8619, 9443, 9633, 11999, 12597, 15691, 17537, 19383, 20111, 22477, 22933, 25347, 28329, 29393, 35997, 47073, 52611, 54587, 60333, 67431, 68799, 83993, 88179, 109837, 122759, 160531, 163761, 203983, 227981, 251979, 298129, 329511, 368277, 382109, 481593, 611949, 683943, 894387, 1146327, 1427881, 1595867, 2086903, 3875677, 4283643, 4787601, 6260709, 11627031, 27129739, 81389217]

約数ペア:

[(1, 81389217), (3, 27129739), (7, 11627031), (13, 6260709), (17, 4787601), (19, 4283643), (21, 3875677), (39, 2086903), (51, 1595867), (57, 1427881), (71, 1146327), (91, 894387), (119, 683943), (133, 611949), (169, 481593), (213, 382109), (221, 368277), (247, 329511), (273, 298129), (323, 251979), (357, 227981), (399, 203983), (497, 163761), (507, 160531), (663, 122759), (741, 109837), (923, 88179), (969, 83993), (1183, 68799), (1207, 67431), (1349, 60333), (1491, 54587), (1547, 52611), (1729, 47073), (2261, 35997), (2769, 29393), (2873, 28329), (3211, 25347), (3549, 22933), (3621, 22477), (4047, 20111), (4199, 19383), (4641, 17537), (5187, 15691), (6461, 12597), (6783, 11999), (8449, 9633), (8619, 9443)]