21161200

素因数分解:

$2^4\times 5^2\times {\mathrm{52903}}^1$

素因数の和:52921

約数の個数: 30

約数和(自身を含む): 50840744

約数和(自身を除く): 29679544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52903, 105806, 211612, 264515, 423224, 529030, 846448, 1058060, 1322575, 2116120, 2645150, 4232240, 5290300, 10580600, 21161200]

約数ペア:

[(1, 21161200), (2, 10580600), (4, 5290300), (5, 4232240), (8, 2645150), (10, 2116120), (16, 1322575), (20, 1058060), (25, 846448), (40, 529030), (50, 423224), (80, 264515), (100, 211612), (200, 105806), (400, 52903)]