20258721

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2897}}^1$

素因数の和:2950

約数の個数: 32

約数和(自身を含む): 35239680

約数和(自身を除く): 14980959

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 2897, 6993, 8691, 20279, 26073, 60837, 78219, 107189, 182511, 321567, 547533, 750323, 964701, 2250969, 2894103, 6752907, 20258721]

約数ペア:

[(1, 20258721), (3, 6752907), (7, 2894103), (9, 2250969), (21, 964701), (27, 750323), (37, 547533), (63, 321567), (111, 182511), (189, 107189), (259, 78219), (333, 60837), (777, 26073), (999, 20279), (2331, 8691), (2897, 6993)]