21025851

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13003}}^1$

素因数の和:13031

約数の個数: 24

約数和(自身を含む): 35578944

約数和(自身を除く): 14553093

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13003, 39009, 91021, 143033, 273063, 429099, 637147, 1001231, 1911441, 3003693, 7008617, 21025851]

約数ペア:

[(1, 21025851), (3, 7008617), (7, 3003693), (11, 1911441), (21, 1001231), (33, 637147), (49, 429099), (77, 273063), (147, 143033), (231, 91021), (539, 39009), (1617, 13003)]