19493487

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 64

約数和(自身を含む): 34048000

約数和(自身を除く): 14554513

約数列:

[1, 3, 9, 13, 19, 27, 37, 39, 57, 79, 111, 117, 171, 237, 247, 333, 351, 481, 513, 703, 711, 741, 999, 1027, 1443, 1501, 2109, 2133, 2223, 2923, 3081, 4329, 4503, 6327, 6669, 8769, 9139, 9243, 12987, 13509, 18981, 19513, 26307, 27417, 27729, 37999, 40527, 55537, 58539, 78921, 82251, 113997, 166611, 175617, 246753, 341991, 499833, 526851, 721981, 1025973, 1499499, 2165943, 6497829, 19493487]

約数ペア:

[(1, 19493487), (3, 6497829), (9, 2165943), (13, 1499499), (19, 1025973), (27, 721981), (37, 526851), (39, 499833), (57, 341991), (79, 246753), (111, 175617), (117, 166611), (171, 113997), (237, 82251), (247, 78921), (333, 58539), (351, 55537), (481, 40527), (513, 37999), (703, 27729), (711, 27417), (741, 26307), (999, 19513), (1027, 18981), (1443, 13509), (1501, 12987), (2109, 9243), (2133, 9139), (2223, 8769), (2923, 6669), (3081, 6327), (4329, 4503)]