16920980

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{7907}}^1$

素因数の和:8023

約数の個数: 24

約数和(自身を含む): 35870688

約数和(自身を除く): 18949708

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 7907, 15814, 31628, 39535, 79070, 158140, 846049, 1692098, 3384196, 4230245, 8460490, 16920980]

約数ペア:

[(1, 16920980), (2, 8460490), (4, 4230245), (5, 3384196), (10, 1692098), (20, 846049), (107, 158140), (214, 79070), (428, 39535), (535, 31628), (1070, 15814), (2140, 7907)]