19991673

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{709}}^1$

素因数の和:969

約数の個数: 24

約数和(自身を含む): 31271240

約数和(自身を除く): 11279567

約数列:

[1, 3, 9, 13, 39, 117, 241, 709, 723, 2127, 2169, 3133, 6381, 9217, 9399, 27651, 28197, 82953, 170869, 512607, 1537821, 2221297, 6663891, 19991673]

約数ペア:

[(1, 19991673), (3, 6663891), (9, 2221297), (13, 1537821), (39, 512607), (117, 170869), (241, 82953), (709, 28197), (723, 27651), (2127, 9399), (2169, 9217), (3133, 6381)]