18872073

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 31948800

約数和(自身を除く): 13076727

約数列:

[1, 3, 9, 11, 19, 33, 57, 79, 99, 127, 171, 209, 237, 381, 627, 711, 869, 1143, 1397, 1501, 1881, 2413, 2607, 4191, 4503, 7239, 7821, 10033, 12573, 13509, 16511, 21717, 26543, 30099, 49533, 79629, 90297, 110363, 148599, 190627, 238887, 331089, 571881, 993267, 1715643, 2096897, 6290691, 18872073]

約数ペア:

[(1, 18872073), (3, 6290691), (9, 2096897), (11, 1715643), (19, 993267), (33, 571881), (57, 331089), (79, 238887), (99, 190627), (127, 148599), (171, 110363), (209, 90297), (237, 79629), (381, 49533), (627, 30099), (711, 26543), (869, 21717), (1143, 16511), (1397, 13509), (1501, 12573), (1881, 10033), (2413, 7821), (2607, 7239), (4191, 4503)]