20409219

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17579}}^1$

素因数の和:17631

約数の個数: 16

約数和(自身を含む): 30940800

約数和(自身を除く): 10531581

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17579, 52737, 158211, 474633, 755897, 2267691, 6803073, 20409219]

約数ペア:

[(1, 20409219), (3, 6803073), (9, 2267691), (27, 755897), (43, 474633), (129, 158211), (387, 52737), (1161, 17579)]