21985293

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{21491}}^1$

素因数の和:21536

約数の個数: 16

約数和(自身を含む): 33011712

約数和(自身を除く): 11026419

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 21491, 64473, 236401, 666221, 709203, 1998663, 7328431, 21985293]

約数ペア:

[(1, 21985293), (3, 7328431), (11, 1998663), (31, 709203), (33, 666221), (93, 236401), (341, 64473), (1023, 21491)]