20513367

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3923}}^1$

素因数の和:4019

約数の個数: 24

約数和(自身を含む): 34280064

約数和(自身を除く): 13766697

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 3923, 5229, 11769, 27461, 35307, 82383, 247149, 325609, 976827, 2279263, 2930481, 6837789, 20513367]

約数ペア:

[(1, 20513367), (3, 6837789), (7, 2930481), (9, 2279263), (21, 976827), (63, 325609), (83, 247149), (249, 82383), (581, 35307), (747, 27461), (1743, 11769), (3923, 5229)]