20408311

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3733}}^1$

素因数の和:3822

約数の個数: 16

約数和(自身を含む): 25809408

約数和(自身を除く): 5401097

約数列:

[1, 7, 11, 71, 77, 497, 781, 3733, 5467, 26131, 41063, 265043, 287441, 1855301, 2915473, 20408311]

約数ペア:

[(1, 20408311), (7, 2915473), (11, 1855301), (71, 287441), (77, 265043), (497, 41063), (781, 26131), (3733, 5467)]