19791321

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8447}}^1$

素因数の和:8532

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 9404967

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8447, 25341, 92917, 278751, 599737, 1799211, 6597107, 19791321]

約数ペア:

[(1, 19791321), (3, 6597107), (11, 1799211), (33, 599737), (71, 278751), (213, 92917), (781, 25341), (2343, 8447)]