21621249

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20533}}^1$

素因数の和:20558

約数の個数: 20

約数和(自身を含む): 34784596

約数和(自身を除く): 13163347

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20533, 61599, 184797, 266929, 554391, 800787, 1663173, 2402361, 7207083, 21621249]

約数ペア:

[(1, 21621249), (3, 7207083), (9, 2402361), (13, 1663173), (27, 800787), (39, 554391), (81, 266929), (117, 184797), (351, 61599), (1053, 20533)]