20407509

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{317}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 30955392

約数和(自身を除く): 10547883

約数列:

[1, 3, 9, 23, 69, 207, 311, 317, 933, 951, 2799, 2853, 7153, 7291, 21459, 21873, 64377, 65619, 98587, 295761, 887283, 2267501, 6802503, 20407509]

約数ペア:

[(1, 20407509), (3, 6802503), (9, 2267501), (23, 887283), (69, 295761), (207, 98587), (311, 65619), (317, 64377), (933, 21873), (951, 21459), (2799, 7291), (2853, 7153)]