21064351

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3853}}^1$

素因数の和:3942

約数の個数: 16

約数和(自身を含む): 26638848

約数和(自身を除く): 5574497

約数列:

[1, 7, 11, 71, 77, 497, 781, 3853, 5467, 26971, 42383, 273563, 296681, 1914941, 3009193, 21064351]

約数ペア:

[(1, 21064351), (7, 3009193), (11, 1914941), (71, 296681), (77, 273563), (497, 42383), (781, 26971), (3853, 5467)]