19806941

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3623}}^1$

素因数の和:3712

約数の個数: 16

約数和(自身を含む): 25049088

約数和(自身を除く): 5242147

約数列:

[1, 7, 11, 71, 77, 497, 781, 3623, 5467, 25361, 39853, 257233, 278971, 1800631, 2829563, 19806941]

約数ペア:

[(1, 19806941), (7, 2829563), (11, 1800631), (71, 278971), (77, 257233), (497, 39853), (781, 25361), (3623, 5467)]