18913193

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 21353472

約数和(自身を除く): 2440279

約数列:

[1, 13, 31, 71, 403, 661, 923, 2201, 8593, 20491, 28613, 46931, 266383, 610103, 1454861, 18913193]

約数ペア:

[(1, 18913193), (13, 1454861), (31, 610103), (71, 266383), (403, 46931), (661, 28613), (923, 20491), (2201, 8593)]