20818545

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126173}}^1$

素因数の和:126192

約数の個数: 16

約数和(自身を含む): 36338112

約数和(自身を除く): 15519567

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126173, 378519, 630865, 1387903, 1892595, 4163709, 6939515, 20818545]

約数ペア:

[(1, 20818545), (3, 6939515), (5, 4163709), (11, 1892595), (15, 1387903), (33, 630865), (55, 378519), (165, 126173)]