16905640

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1607}}^1$

素因数の和:1881

約数の個数: 32

約数和(自身を含む): 38206080

約数和(自身を除く): 21300440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1607, 2104, 2630, 3214, 5260, 6428, 8035, 10520, 12856, 16070, 32140, 64280, 422641, 845282, 1690564, 2113205, 3381128, 4226410, 8452820, 16905640]

約数ペア:

[(1, 16905640), (2, 8452820), (4, 4226410), (5, 3381128), (8, 2113205), (10, 1690564), (20, 845282), (40, 422641), (263, 64280), (526, 32140), (1052, 16070), (1315, 12856), (1607, 10520), (2104, 8035), (2630, 6428), (3214, 5260)]