21047751

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137567}}^1$

素因数の和:137590

約数の個数: 12

約数和(自身を含む): 32190912

約数和(自身を除く): 11143161

約数列:

[1, 3, 9, 17, 51, 153, 137567, 412701, 1238103, 2338639, 7015917, 21047751]

約数ペア:

[(1, 21047751), (3, 7015917), (9, 2338639), (17, 1238103), (51, 412701), (153, 137567)]