21393801

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1847}}^1$

素因数の和:1883

約数の個数: 40

約数和(自身を含む): 37566144

約数和(自身を除く): 16172343

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 297, 351, 429, 891, 1053, 1287, 1847, 3861, 5541, 11583, 16623, 20317, 24011, 49869, 60951, 72033, 149607, 182853, 216099, 264121, 548559, 648297, 792363, 1645677, 1944891, 2377089, 7131267, 21393801]

約数ペア:

[(1, 21393801), (3, 7131267), (9, 2377089), (11, 1944891), (13, 1645677), (27, 792363), (33, 648297), (39, 548559), (81, 264121), (99, 216099), (117, 182853), (143, 149607), (297, 72033), (351, 60951), (429, 49869), (891, 24011), (1053, 20317), (1287, 16623), (1847, 11583), (3861, 5541)]