18720206

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21419}}^1$

素因数の和:21463

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 12124594

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 21419, 42838, 406961, 492637, 813922, 985274, 9360103, 18720206]

約数ペア:

[(1, 18720206), (2, 9360103), (19, 985274), (23, 813922), (38, 492637), (46, 406961), (437, 42838), (874, 21419)]