18018973

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2221}}^1$

素因数の和:2308

約数の個数: 16

約数和(自身を含む): 22042240

約数和(自身を除く): 4023267

約数列:

[1, 7, 19, 61, 133, 427, 1159, 2221, 8113, 15547, 42199, 135481, 295393, 948367, 2574139, 18018973]

約数ペア:

[(1, 18018973), (7, 2574139), (19, 948367), (61, 295393), (133, 135481), (427, 42199), (1159, 15547), (2221, 8113)]