21556969

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1693}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 26345088

約数和(自身を除く): 4788119

約数列:

[1, 7, 17, 107, 119, 749, 1693, 1819, 11851, 12733, 28781, 181151, 201467, 1268057, 3079567, 21556969]

約数ペア:

[(1, 21556969), (7, 3079567), (17, 1268057), (107, 201467), (119, 181151), (749, 28781), (1693, 12733), (1819, 11851)]