21413727

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15551}}^1$

素因数の和:15580

約数の個数: 20

約数和(自身を含む): 33872256

約数和(自身を除く): 12458529

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15551, 46653, 139959, 264367, 419877, 793101, 1259631, 2379303, 7137909, 21413727]

約数ペア:

[(1, 21413727), (3, 7137909), (9, 2379303), (17, 1259631), (27, 793101), (51, 419877), (81, 264367), (153, 139959), (459, 46653), (1377, 15551)]