398220921

素因数分解:

$3^3\times 7^1\times {\mathrm{2106989}}^1$

素因数の和:2107005

約数の個数: 16

約数和(自身を含む): 674236800

約数和(自身を除く): 276015879

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 2106989, 6320967, 14748923, 18962901, 44246769, 56888703, 132740307, 398220921]

約数ペア:

[(1, 398220921), (3, 132740307), (7, 56888703), (9, 44246769), (21, 18962901), (27, 14748923), (63, 6320967), (189, 2106989)]