20267009

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4603}}^1$

素因数の和:4664

約数の個数: 16

約数和(自身を含む): 25193088

約数和(自身を除く): 4926079

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4603, 32221, 78251, 170311, 547757, 1192177, 2895287, 20267009]

約数ペア:

[(1, 20267009), (7, 2895287), (17, 1192177), (37, 547757), (119, 170311), (259, 78251), (629, 32221), (4403, 4603)]