20728494

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 48153600

約数和(自身を除く): 27425106

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 79, 86, 113, 129, 158, 226, 237, 258, 339, 387, 474, 678, 711, 774, 1017, 1161, 1422, 2034, 2133, 2322, 3051, 3397, 4266, 4859, 6102, 6794, 8927, 9718, 10191, 14577, 17854, 20382, 26781, 29154, 30573, 43731, 53562, 61146, 80343, 87462, 91719, 131193, 160686, 183438, 241029, 262386, 383861, 482058, 767722, 1151583, 2303166, 3454749, 6909498, 10364247, 20728494]

約数ペア:

[(1, 20728494), (2, 10364247), (3, 6909498), (6, 3454749), (9, 2303166), (18, 1151583), (27, 767722), (43, 482058), (54, 383861), (79, 262386), (86, 241029), (113, 183438), (129, 160686), (158, 131193), (226, 91719), (237, 87462), (258, 80343), (339, 61146), (387, 53562), (474, 43731), (678, 30573), (711, 29154), (774, 26781), (1017, 20382), (1161, 17854), (1422, 14577), (2034, 10191), (2133, 9718), (2322, 8927), (3051, 6794), (3397, 6102), (4266, 4859)]