21305981

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1879}}^1$

素因数の和:1948

約数の個数: 16

約数和(自身を含む): 24364800

約数和(自身を除く): 3058819

約数列:

[1, 17, 23, 29, 391, 493, 667, 1879, 11339, 31943, 43217, 54491, 734689, 926347, 1253293, 21305981]

約数ペア:

[(1, 21305981), (17, 1253293), (23, 926347), (29, 734689), (391, 54491), (493, 43217), (667, 31943), (1879, 11339)]