400997140

素因数分解:

$2^2\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{19447}}^1$

素因数の和:20487

約数の個数: 24

約数和(自身を含む): 842954112

約数和(自身を除く): 441956972

約数列:

[1, 2, 4, 5, 10, 20, 1031, 2062, 4124, 5155, 10310, 19447, 20620, 38894, 77788, 97235, 194470, 388940, 20049857, 40099714, 80199428, 100249285, 200498570, 400997140]

約数ペア:

[(1, 400997140), (2, 200498570), (4, 100249285), (5, 80199428), (10, 40099714), (20, 20049857), (1031, 388940), (2062, 194470), (4124, 97235), (5155, 77788), (10310, 38894), (19447, 20620)]