81636919

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{673}}^1$

素因数の和:767

約数の個数: 32

約数和(自身を含む): 106287104

約数和(自身を除く): 24650185

約数列:

[1, 7, 13, 31, 43, 91, 217, 301, 403, 559, 673, 1333, 2821, 3913, 4711, 8749, 9331, 17329, 20863, 28939, 61243, 121303, 146041, 202573, 271219, 376207, 897109, 1898533, 2633449, 6279763, 11662417, 81636919]

約数ペア:

[(1, 81636919), (7, 11662417), (13, 6279763), (31, 2633449), (43, 1898533), (91, 897109), (217, 376207), (301, 271219), (403, 202573), (559, 146041), (673, 121303), (1333, 61243), (2821, 28939), (3913, 20863), (4711, 17329), (8749, 9331)]