19947069

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{7669}}^1$

素因数の和:7709

約数の個数: 18

約数和(自身を含む): 30610970

約数和(自身を除く): 10663901

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 7669, 23007, 69021, 130373, 391119, 1173357, 2216341, 6649023, 19947069]

約数ペア:

[(1, 19947069), (3, 6649023), (9, 2216341), (17, 1173357), (51, 391119), (153, 130373), (289, 69021), (867, 23007), (2601, 7669)]