21362211

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20287}}^1$

素因数の和:20312

約数の個数: 20

約数和(自身を含む): 34367872

約数和(自身を除く): 13005661

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20287, 60861, 182583, 263731, 547749, 791193, 1643247, 2373579, 7120737, 21362211]

約数ペア:

[(1, 21362211), (3, 7120737), (9, 2373579), (13, 1643247), (27, 791193), (39, 547749), (81, 263731), (117, 182583), (351, 60861), (1053, 20287)]