19818898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6481}}^1$

素因数の和:6633

約数の個数: 16

約数和(自身を含む): 32669280

約数和(自身を除く): 12850382

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6481, 12962, 71291, 142582, 900859, 1801718, 9909449, 19818898]

約数ペア:

[(1, 19818898), (2, 9909449), (11, 1801718), (22, 900859), (139, 142582), (278, 71291), (1529, 12962), (3058, 6481)]