21989121

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{95191}}^1$

素因数の和:95212

約数の個数: 16

約数和(自身を含む): 36553728

約数和(自身を除く): 14564607

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 95191, 285573, 666337, 1047101, 1999011, 3141303, 7329707, 21989121]

約数ペア:

[(1, 21989121), (3, 7329707), (7, 3141303), (11, 1999011), (21, 1047101), (33, 666337), (77, 285573), (231, 95191)]