21455105

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 31539456

約数和(自身を除く): 10084351

約数列:

[1, 5, 7, 17, 35, 85, 107, 119, 337, 535, 595, 749, 1685, 1819, 2359, 3745, 5729, 9095, 11795, 12733, 28645, 36059, 40103, 63665, 180295, 200515, 252413, 613003, 1262065, 3065015, 4291021, 21455105]

約数ペア:

[(1, 21455105), (5, 4291021), (7, 3065015), (17, 1262065), (35, 613003), (85, 252413), (107, 200515), (119, 180295), (337, 63665), (535, 40103), (595, 36059), (749, 28645), (1685, 12733), (1819, 11795), (2359, 9095), (3745, 5729)]