20917737

素因数分解:

$3^3\times {\mathrm{43}}^2\times {\mathrm{419}}^1$

素因数の和:514

約数の個数: 24

約数和(自身を含む): 31802400

約数和(自身を除く): 10884663

約数列:

[1, 3, 9, 27, 43, 129, 387, 419, 1161, 1257, 1849, 3771, 5547, 11313, 16641, 18017, 49923, 54051, 162153, 486459, 774731, 2324193, 6972579, 20917737]

約数ペア:

[(1, 20917737), (3, 6972579), (9, 2324193), (27, 774731), (43, 486459), (129, 162153), (387, 54051), (419, 49923), (1161, 18017), (1257, 16641), (1849, 11313), (3771, 5547)]