20655261

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 34944000

約数和(自身を除く): 14288739

約数列:

[1, 3, 9, 11, 19, 33, 57, 79, 99, 139, 171, 209, 237, 417, 627, 711, 869, 1251, 1501, 1529, 1881, 2607, 2641, 4503, 4587, 7821, 7923, 10981, 13509, 13761, 16511, 23769, 29051, 32943, 49533, 87153, 98829, 120791, 148599, 208639, 261459, 362373, 625917, 1087119, 1877751, 2295029, 6885087, 20655261]

約数ペア:

[(1, 20655261), (3, 6885087), (9, 2295029), (11, 1877751), (19, 1087119), (33, 625917), (57, 362373), (79, 261459), (99, 208639), (139, 148599), (171, 120791), (209, 98829), (237, 87153), (417, 49533), (627, 32943), (711, 29051), (869, 23769), (1251, 16511), (1501, 13761), (1529, 13509), (1881, 10981), (2607, 7923), (2641, 7821), (4503, 4587)]