17980809

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{77839}}^1$

素因数の和:77860

約数の個数: 16

約数和(自身を含む): 29890560

約数和(自身を除く): 11909751

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 77839, 233517, 544873, 856229, 1634619, 2568687, 5993603, 17980809]

約数ペア:

[(1, 17980809), (3, 5993603), (7, 2568687), (11, 1634619), (21, 856229), (33, 544873), (77, 233517), (231, 77839)]