21275716

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1031}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 47158272

約数和(自身を除く): 25882556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 67, 77, 134, 154, 268, 308, 469, 737, 938, 1031, 1474, 1876, 2062, 2948, 4124, 5159, 7217, 10318, 11341, 14434, 20636, 22682, 28868, 45364, 69077, 79387, 138154, 158774, 276308, 317548, 483539, 759847, 967078, 1519694, 1934156, 3039388, 5318929, 10637858, 21275716]

約数ペア:

[(1, 21275716), (2, 10637858), (4, 5318929), (7, 3039388), (11, 1934156), (14, 1519694), (22, 967078), (28, 759847), (44, 483539), (67, 317548), (77, 276308), (134, 158774), (154, 138154), (268, 79387), (308, 69077), (469, 45364), (737, 28868), (938, 22682), (1031, 20636), (1474, 14434), (1876, 11341), (2062, 10318), (2948, 7217), (4124, 5159)]