990605

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:137

約数の個数: 32

約数和(自身を含む): 1548288

約数和(自身を除く): 557683

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 83, 155, 217, 341, 385, 415, 581, 913, 1085, 1705, 2387, 2573, 2905, 4565, 6391, 11935, 12865, 18011, 28303, 31955, 90055, 141515, 198121, 990605]

約数ペア:

[(1, 990605), (5, 198121), (7, 141515), (11, 90055), (31, 31955), (35, 28303), (55, 18011), (77, 12865), (83, 11935), (155, 6391), (217, 4565), (341, 2905), (385, 2573), (415, 2387), (581, 1705), (913, 1085)]