20051878

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 72

約数和(自身を含む): 40937400

約数和(自身を除く): 20885522

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 77, 89, 98, 121, 133, 154, 178, 209, 242, 266, 418, 539, 623, 847, 931, 979, 1078, 1246, 1463, 1691, 1694, 1862, 1958, 2299, 2926, 3382, 4361, 4598, 5929, 6853, 8722, 10241, 10769, 11837, 11858, 13706, 16093, 18601, 20482, 21538, 23674, 32186, 37202, 47971, 75383, 82859, 95942, 112651, 130207, 150766, 165718, 204611, 225302, 260414, 409222, 527681, 911449, 1055362, 1432277, 1822898, 2864554, 10025939, 20051878]

約数ペア:

[(1, 20051878), (2, 10025939), (7, 2864554), (11, 1822898), (14, 1432277), (19, 1055362), (22, 911449), (38, 527681), (49, 409222), (77, 260414), (89, 225302), (98, 204611), (121, 165718), (133, 150766), (154, 130207), (178, 112651), (209, 95942), (242, 82859), (266, 75383), (418, 47971), (539, 37202), (623, 32186), (847, 23674), (931, 21538), (979, 20482), (1078, 18601), (1246, 16093), (1463, 13706), (1691, 11858), (1694, 11837), (1862, 10769), (1958, 10241), (2299, 8722), (2926, 6853), (3382, 5929), (4361, 4598)]