21057111

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41047}}^1$

素因数の和:41075

約数の個数: 16

約数和(自身を含む): 32838400

約数和(自身を除く): 11781289

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41047, 123141, 369423, 779893, 1108269, 2339679, 7019037, 21057111]

約数ペア:

[(1, 21057111), (3, 7019037), (9, 2339679), (19, 1108269), (27, 779893), (57, 369423), (171, 123141), (513, 41047)]