18668906

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{1109}}^1$

素因数の和:1573

約数の個数: 16

約数和(自身を含む): 29570400

約数和(自身を除く): 10901494

約数列:

[1, 2, 19, 38, 443, 886, 1109, 2218, 8417, 16834, 21071, 42142, 491287, 982574, 9334453, 18668906]

約数ペア:

[(1, 18668906), (2, 9334453), (19, 982574), (38, 491287), (443, 42142), (886, 21071), (1109, 16834), (2218, 8417)]