21284595

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27823}}^1$

素因数の和:27851

約数の個数: 24

約数和(自身を含む): 39064896

約数和(自身を除く): 17780301

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27823, 83469, 139115, 250407, 417345, 472991, 1252035, 1418973, 2364955, 4256919, 7094865, 21284595]

約数ペア:

[(1, 21284595), (3, 7094865), (5, 4256919), (9, 2364955), (15, 1418973), (17, 1252035), (45, 472991), (51, 417345), (85, 250407), (153, 139115), (255, 83469), (765, 27823)]