20889407

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3821}}^1$

素因数の和:3910

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 5528257

約数列:

[1, 7, 11, 71, 77, 497, 781, 3821, 5467, 26747, 42031, 271291, 294217, 1899037, 2984201, 20889407]

約数ペア:

[(1, 20889407), (7, 2984201), (11, 1899037), (71, 294217), (77, 271291), (497, 42031), (781, 26747), (3821, 5467)]