21038537

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4139}}^1$

素因数の和:4192

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 4000183

約数列:

[1, 13, 17, 23, 221, 299, 391, 4139, 5083, 53807, 70363, 95197, 914719, 1237561, 1618349, 21038537]

約数ペア:

[(1, 21038537), (13, 1618349), (17, 1237561), (23, 914719), (221, 95197), (299, 70363), (391, 53807), (4139, 5083)]