16721960

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{3907}}^1$

素因数の和:4025

約数の個数: 32

約数和(自身を含む): 37985760

約数和(自身を除く): 21263800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 3907, 4280, 7814, 15628, 19535, 31256, 39070, 78140, 156280, 418049, 836098, 1672196, 2090245, 3344392, 4180490, 8360980, 16721960]

約数ペア:

[(1, 16721960), (2, 8360980), (4, 4180490), (5, 3344392), (8, 2090245), (10, 1672196), (20, 836098), (40, 418049), (107, 156280), (214, 78140), (428, 39070), (535, 31256), (856, 19535), (1070, 15628), (2140, 7814), (3907, 4280)]