21008821

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53731}}^1$

素因数の和:53771

約数の個数: 8

約数和(自身を含む): 23212224

約数和(自身を除く): 2203403

約数列:

[1, 17, 23, 391, 53731, 913427, 1235813, 21008821]

約数ペア:

[(1, 21008821), (17, 1235813), (23, 913427), (391, 53731)]