20718393

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3727}}^1$

素因数の和:3856

約数の個数: 16

約数和(自身を含む): 29525760

約数和(自身を除く): 8807367

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3727, 5559, 11181, 63359, 190077, 406243, 1218729, 6906131, 20718393]

約数ペア:

[(1, 20718393), (3, 6906131), (17, 1218729), (51, 406243), (109, 190077), (327, 63359), (1853, 11181), (3727, 5559)]