21647109

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{17729}}^1$

素因数の和:17780

約数の個数: 16

約数和(自身を含む): 32339520

約数和(自身を除く): 10692411

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 17729, 53187, 195019, 585057, 655973, 1967919, 7215703, 21647109]

約数ペア:

[(1, 21647109), (3, 7215703), (11, 1967919), (33, 655973), (37, 585057), (111, 195019), (407, 53187), (1221, 17729)]