28312880

素因数分解:

$2^4\times 5^1\times {\mathrm{353911}}^1$

素因数の和:353924

約数の個数: 20

約数和(自身を含む): 65827632

約数和(自身を除く): 37514752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353911, 707822, 1415644, 1769555, 2831288, 3539110, 5662576, 7078220, 14156440, 28312880]

約数ペア:

[(1, 28312880), (2, 14156440), (4, 7078220), (5, 5662576), (8, 3539110), (10, 2831288), (16, 1769555), (20, 1415644), (40, 707822), (80, 353911)]