20675817

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5431}}^1$

素因数の和:5490

約数の個数: 20

約数和(自身を含む): 31549056

約数和(自身を除く): 10873239

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5431, 16293, 48879, 146637, 255257, 439911, 765771, 2297313, 6891939, 20675817]

約数ペア:

[(1, 20675817), (3, 6891939), (9, 2297313), (27, 765771), (47, 439911), (81, 255257), (141, 146637), (423, 48879), (1269, 16293), (3807, 5431)]