16683925

素因数分解:

$5^2\times {\mathrm{41}}^2\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 18

約数和(自身を含む): 21258374

約数和(自身を除く): 4574449

約数列:

[1, 5, 25, 41, 205, 397, 1025, 1681, 1985, 8405, 9925, 16277, 42025, 81385, 406925, 667357, 3336785, 16683925]

約数ペア:

[(1, 16683925), (5, 3336785), (25, 667357), (41, 406925), (205, 81385), (397, 42025), (1025, 16277), (1681, 9925), (1985, 8405)]