21288639

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{10639}}^1$

素因数の和:10694

約数の個数: 16

約数和(自身を含む): 30643200

約数和(自身を除く): 9354561

約数列:

[1, 3, 23, 29, 69, 87, 667, 2001, 10639, 31917, 244697, 308531, 734091, 925593, 7096213, 21288639]

約数ペア:

[(1, 21288639), (3, 7096213), (23, 925593), (29, 734091), (69, 308531), (87, 244697), (667, 31917), (2001, 10639)]