214400980

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{21061}}^1$

素因数の和:21579

約数の個数: 24

約数和(自身を含む): 451148040

約数和(自身を除く): 236747060

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 21061, 42122, 84244, 105305, 210610, 421220, 10720049, 21440098, 42880196, 53600245, 107200490, 214400980]

約数ペア:

[(1, 214400980), (2, 107200490), (4, 53600245), (5, 42880196), (10, 21440098), (20, 10720049), (509, 421220), (1018, 210610), (2036, 105305), (2545, 84244), (5090, 42122), (10180, 21061)]