28911110

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 53654400

約数和(自身を除く): 24743290

約数列:

[1, 2, 5, 10, 47, 94, 137, 235, 274, 449, 470, 685, 898, 1370, 2245, 4490, 6439, 12878, 21103, 32195, 42206, 61513, 64390, 105515, 123026, 211030, 307565, 615130, 2891111, 5782222, 14455555, 28911110]

約数ペア:

[(1, 28911110), (2, 14455555), (5, 5782222), (10, 2891111), (47, 615130), (94, 307565), (137, 211030), (235, 123026), (274, 105515), (449, 64390), (470, 61513), (685, 42206), (898, 32195), (1370, 21103), (2245, 12878), (4490, 6439)]