8990905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{193}}^1$

素因数の和:238

約数の個数: 32

約数和(自身を含む): 13632768

約数和(自身を除く): 4641863

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 193, 385, 605, 847, 965, 1331, 1351, 2123, 4235, 6655, 6755, 9317, 10615, 14861, 23353, 46585, 74305, 116765, 163471, 256883, 817355, 1284415, 1798181, 8990905]

約数ペア:

[(1, 8990905), (5, 1798181), (7, 1284415), (11, 817355), (35, 256883), (55, 163471), (77, 116765), (121, 74305), (193, 46585), (385, 23353), (605, 14861), (847, 10615), (965, 9317), (1331, 6755), (1351, 6655), (2123, 4235)]