21494727

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{1009}}^1$

素因数の和:1284

約数の個数: 20

約数和(自身を含む): 32263440

約数和(自身を除く): 10768713

約数列:

[1, 3, 9, 27, 81, 263, 789, 1009, 2367, 3027, 7101, 9081, 21303, 27243, 81729, 265367, 796101, 2388303, 7164909, 21494727]

約数ペア:

[(1, 21494727), (3, 7164909), (9, 2388303), (27, 796101), (81, 265367), (263, 81729), (789, 27243), (1009, 21303), (2367, 9081), (3027, 7101)]