19927271

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:184

約数の個数: 32

約数和(自身を含む): 25872000

約数和(自身を除く): 5944729

約数列:

[1, 7, 13, 41, 49, 91, 109, 287, 343, 533, 637, 763, 1417, 2009, 3731, 4459, 4469, 5341, 9919, 14063, 26117, 31283, 37387, 58097, 69433, 182819, 218981, 406679, 486031, 1532867, 2846753, 19927271]

約数ペア:

[(1, 19927271), (7, 2846753), (13, 1532867), (41, 486031), (49, 406679), (91, 218981), (109, 182819), (287, 69433), (343, 58097), (533, 37387), (637, 31283), (763, 26117), (1417, 14063), (2009, 9919), (3731, 5341), (4459, 4469)]