21697450

素因数分解:

$2^1\times 5^2\times {\mathrm{409}}^1\times {\mathrm{1061}}^1$

素因数の和:1482

約数の個数: 24

約数和(自身を含む): 40494060

約数和(自身を除く): 18796610

約数列:

[1, 2, 5, 10, 25, 50, 409, 818, 1061, 2045, 2122, 4090, 5305, 10225, 10610, 20450, 26525, 53050, 433949, 867898, 2169745, 4339490, 10848725, 21697450]

約数ペア:

[(1, 21697450), (2, 10848725), (5, 4339490), (10, 2169745), (25, 867898), (50, 433949), (409, 53050), (818, 26525), (1061, 20450), (2045, 10610), (2122, 10225), (4090, 5305)]