18711815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{7591}}^1$

素因数の和:7642

約数の個数: 16

約数和(自身を含む): 24598080

約数和(自身を除く): 5886265

約数列:

[1, 5, 17, 29, 85, 145, 493, 2465, 7591, 37955, 129047, 220139, 645235, 1100695, 3742363, 18711815]

約数ペア:

[(1, 18711815), (5, 3742363), (17, 1100695), (29, 645235), (85, 220139), (145, 129047), (493, 37955), (2465, 7591)]