18666531

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 31799040

約数和(自身を除く): 13132509

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 243, 247, 311, 351, 513, 741, 933, 1053, 1539, 2223, 2799, 3159, 4043, 4617, 5909, 6669, 8397, 12129, 17727, 20007, 25191, 36387, 53181, 60021, 75573, 76817, 109161, 159543, 230451, 327483, 478629, 691353, 982449, 1435887, 2074059, 6222177, 18666531]

約数ペア:

[(1, 18666531), (3, 6222177), (9, 2074059), (13, 1435887), (19, 982449), (27, 691353), (39, 478629), (57, 327483), (81, 230451), (117, 159543), (171, 109161), (243, 76817), (247, 75573), (311, 60021), (351, 53181), (513, 36387), (741, 25191), (933, 20007), (1053, 17727), (1539, 12129), (2223, 8397), (2799, 6669), (3159, 5909), (4043, 4617)]