20966841

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 36201984

約数和(自身を除く): 15235143

約数列:

[1, 3, 7, 9, 21, 47, 63, 73, 97, 141, 219, 291, 329, 423, 511, 657, 679, 873, 987, 1533, 2037, 2961, 3431, 4559, 4599, 6111, 7081, 10293, 13677, 21243, 24017, 30879, 31913, 41031, 49567, 63729, 72051, 95739, 148701, 216153, 287217, 332807, 446103, 998421, 2329649, 2995263, 6988947, 20966841]

約数ペア:

[(1, 20966841), (3, 6988947), (7, 2995263), (9, 2329649), (21, 998421), (47, 446103), (63, 332807), (73, 287217), (97, 216153), (141, 148701), (219, 95739), (291, 72051), (329, 63729), (423, 49567), (511, 41031), (657, 31913), (679, 30879), (873, 24017), (987, 21243), (1533, 13677), (2037, 10293), (2961, 7081), (3431, 6111), (4559, 4599)]