20159320181

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{649651}}^1$

素因数の和:649713

約数の個数: 32

約数和(自身を含む): 27940233216

約数和(自身を除く): 7780913035

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 1001, 2387, 2821, 4433, 31031, 649651, 4547557, 7146161, 8445463, 20139181, 50023127, 59118241, 92900093, 140974267, 221530991, 261809353, 650300651, 1550716937, 1832665471, 2879902883, 20159320181]

約数ペア:

[(1, 20159320181), (7, 2879902883), (11, 1832665471), (13, 1550716937), (31, 650300651), (77, 261809353), (91, 221530991), (143, 140974267), (217, 92900093), (341, 59118241), (403, 50023127), (1001, 20139181), (2387, 8445463), (2821, 7146161), (4433, 4547557), (31031, 649651)]