21643011

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{313}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 34816320

約数和(自身を除く): 13173309

約数列:

[1, 3, 9, 13, 27, 39, 117, 197, 313, 351, 591, 939, 1773, 2561, 2817, 4069, 5319, 7683, 8451, 12207, 23049, 36621, 61661, 69147, 109863, 184983, 554949, 801593, 1664847, 2404779, 7214337, 21643011]

約数ペア:

[(1, 21643011), (3, 7214337), (9, 2404779), (13, 1664847), (27, 801593), (39, 554949), (117, 184983), (197, 109863), (313, 69147), (351, 61661), (591, 36621), (939, 23049), (1773, 12207), (2561, 8451), (2817, 7683), (4069, 5319)]