20854834

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{947}}^1$

素因数の和:991

約数の個数: 48

約数和(自身を含む): 42364224

約数和(自身を除く): 21509390

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 121, 143, 154, 182, 242, 286, 847, 947, 1001, 1573, 1694, 1894, 2002, 3146, 6629, 10417, 11011, 12311, 13258, 20834, 22022, 24622, 72919, 86177, 114587, 135421, 145838, 172354, 229174, 270842, 802109, 947947, 1489631, 1604218, 1895894, 2979262, 10427417, 20854834]

約数ペア:

[(1, 20854834), (2, 10427417), (7, 2979262), (11, 1895894), (13, 1604218), (14, 1489631), (22, 947947), (26, 802109), (77, 270842), (91, 229174), (121, 172354), (143, 145838), (154, 135421), (182, 114587), (242, 86177), (286, 72919), (847, 24622), (947, 22022), (1001, 20834), (1573, 13258), (1694, 12311), (1894, 11011), (2002, 10417), (3146, 6629)]