20311209

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 33892800

約数和(自身を除く): 13581591

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 137, 153, 171, 289, 323, 411, 459, 513, 867, 969, 1233, 2329, 2601, 2603, 2907, 3699, 5491, 6987, 7803, 7809, 8721, 16473, 20961, 23427, 39593, 44251, 49419, 62883, 70281, 118779, 132753, 148257, 356337, 398259, 752267, 1069011, 1194777, 2256801, 6770403, 20311209]

約数ペア:

[(1, 20311209), (3, 6770403), (9, 2256801), (17, 1194777), (19, 1069011), (27, 752267), (51, 398259), (57, 356337), (137, 148257), (153, 132753), (171, 118779), (289, 70281), (323, 62883), (411, 49419), (459, 44251), (513, 39593), (867, 23427), (969, 20961), (1233, 16473), (2329, 8721), (2601, 7809), (2603, 7803), (2907, 6987), (3699, 5491)]