20528888

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{719}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19387912

約数列:

[1, 2, 4, 8, 43, 83, 86, 166, 172, 332, 344, 664, 719, 1438, 2876, 3569, 5752, 7138, 14276, 28552, 30917, 59677, 61834, 119354, 123668, 238708, 247336, 477416, 2566111, 5132222, 10264444, 20528888]

約数ペア:

[(1, 20528888), (2, 10264444), (4, 5132222), (8, 2566111), (43, 477416), (83, 247336), (86, 238708), (166, 123668), (172, 119354), (332, 61834), (344, 59677), (664, 30917), (719, 28552), (1438, 14276), (2876, 7138), (3569, 5752)]