20866937

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 26703360

約数和(自身を除く): 5836423

約数列:

[1, 7, 13, 31, 91, 169, 217, 403, 569, 1183, 2821, 3983, 5239, 7397, 17639, 36673, 51779, 96161, 123473, 229307, 673127, 1605149, 2980991, 20866937]

約数ペア:

[(1, 20866937), (7, 2980991), (13, 1605149), (31, 673127), (91, 229307), (169, 123473), (217, 96161), (403, 51779), (569, 36673), (1183, 17639), (2821, 7397), (3983, 5239)]