18129069

素因数分解:

$3^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 31847040

約数和(自身を除く): 13717971

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 147, 189, 193, 213, 441, 497, 579, 639, 1323, 1351, 1491, 1737, 1917, 3479, 4053, 4473, 5211, 9457, 10437, 12159, 13419, 13703, 28371, 31311, 36477, 41109, 85113, 93933, 95921, 123327, 255339, 287763, 369981, 671447, 863289, 2014341, 2589867, 6043023, 18129069]

約数ペア:

[(1, 18129069), (3, 6043023), (7, 2589867), (9, 2014341), (21, 863289), (27, 671447), (49, 369981), (63, 287763), (71, 255339), (147, 123327), (189, 95921), (193, 93933), (213, 85113), (441, 41109), (497, 36477), (579, 31311), (639, 28371), (1323, 13703), (1351, 13419), (1491, 12159), (1737, 10437), (1917, 9457), (3479, 5211), (4053, 4473)]