21041721

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41017}}^1$

素因数の和:41045

約数の個数: 16

約数和(自身を含む): 32814400

約数和(自身を除く): 11772679

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41017, 123051, 369153, 779323, 1107459, 2337969, 7013907, 21041721]

約数ペア:

[(1, 21041721), (3, 7013907), (9, 2337969), (19, 1107459), (27, 779323), (57, 369153), (171, 123051), (513, 41017)]