20139867

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 15341733

約数列:

[1, 3, 9, 11, 19, 27, 33, 43, 57, 83, 99, 129, 171, 209, 249, 297, 387, 473, 513, 627, 747, 817, 913, 1161, 1419, 1577, 1881, 2241, 2451, 2739, 3569, 4257, 4731, 5643, 7353, 8217, 8987, 10707, 12771, 14193, 17347, 22059, 24651, 26961, 32121, 39259, 42579, 52041, 67811, 80883, 96363, 117777, 156123, 203433, 242649, 353331, 468369, 610299, 745921, 1059993, 1830897, 2237763, 6713289, 20139867]

約数ペア:

[(1, 20139867), (3, 6713289), (9, 2237763), (11, 1830897), (19, 1059993), (27, 745921), (33, 610299), (43, 468369), (57, 353331), (83, 242649), (99, 203433), (129, 156123), (171, 117777), (209, 96363), (249, 80883), (297, 67811), (387, 52041), (473, 42579), (513, 39259), (627, 32121), (747, 26961), (817, 24651), (913, 22059), (1161, 17347), (1419, 14193), (1577, 12771), (1881, 10707), (2241, 8987), (2451, 8217), (2739, 7353), (3569, 5643), (4257, 4731)]