20972476

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17419}}^1$

素因数の和:17473

約数の個数: 24

約数和(自身を含む): 42922880

約数和(自身を除く): 21950404

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17419, 34838, 69676, 121933, 243866, 487732, 749017, 1498034, 2996068, 5243119, 10486238, 20972476]

約数ペア:

[(1, 20972476), (2, 10486238), (4, 5243119), (7, 2996068), (14, 1498034), (28, 749017), (43, 487732), (86, 243866), (172, 121933), (301, 69676), (602, 34838), (1204, 17419)]