20359521

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{24859}}^1$

素因数の和:24885

約数の個数: 24

約数和(自身を含む): 36196160

約数和(自身を除く): 15836639

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 24859, 74577, 174013, 223731, 323167, 522039, 969501, 1566117, 2262169, 2908503, 6786507, 20359521]

約数ペア:

[(1, 20359521), (3, 6786507), (7, 2908503), (9, 2262169), (13, 1566117), (21, 969501), (39, 522039), (63, 323167), (91, 223731), (117, 174013), (273, 74577), (819, 24859)]