21005217

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{45763}}^1$

素因数の和:45789

約数の個数: 16

約数和(自身を含む): 32950080

約数和(自身を除く): 11944863

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 45763, 137289, 411867, 777971, 1235601, 2333913, 7001739, 21005217]

約数ペア:

[(1, 21005217), (3, 7001739), (9, 2333913), (17, 1235601), (27, 777971), (51, 411867), (153, 137289), (459, 45763)]