20692287

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 18706113

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 63, 77, 99, 111, 189, 231, 259, 269, 297, 333, 407, 693, 777, 807, 999, 1221, 1883, 2079, 2331, 2421, 2849, 2959, 3663, 5649, 6993, 7263, 8547, 8877, 9953, 10989, 16947, 20713, 25641, 26631, 29859, 50841, 62139, 69671, 76923, 79893, 89577, 109483, 186417, 209013, 268731, 328449, 559251, 627039, 766381, 985347, 1881117, 2299143, 2956041, 6897429, 20692287]

約数ペア:

[(1, 20692287), (3, 6897429), (7, 2956041), (9, 2299143), (11, 1881117), (21, 985347), (27, 766381), (33, 627039), (37, 559251), (63, 328449), (77, 268731), (99, 209013), (111, 186417), (189, 109483), (231, 89577), (259, 79893), (269, 76923), (297, 69671), (333, 62139), (407, 50841), (693, 29859), (777, 26631), (807, 25641), (999, 20713), (1221, 16947), (1883, 10989), (2079, 9953), (2331, 8877), (2421, 8547), (2849, 7263), (2959, 6993), (3663, 5649)]