21000613942

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1753}}^1\times {\mathrm{11113}}^1$

素因数の和:12893

約数の個数: 48

約数和(自身を含む): 40001597712

約数和(自身を除く): 19000983770

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 1753, 3506, 11113, 12271, 19283, 22226, 24542, 38566, 77791, 85897, 122243, 134981, 155582, 171794, 244486, 269962, 544537, 855701, 944867, 1089074, 1711402, 1889734, 5989907, 11979814, 19481089, 38962178, 136367623, 214291979, 272735246, 428583958, 954573361, 1500043853, 1909146722, 3000087706, 10500306971, 21000613942]

約数ペア:

[(1, 21000613942), (2, 10500306971), (7, 3000087706), (11, 1909146722), (14, 1500043853), (22, 954573361), (49, 428583958), (77, 272735246), (98, 214291979), (154, 136367623), (539, 38962178), (1078, 19481089), (1753, 11979814), (3506, 5989907), (11113, 1889734), (12271, 1711402), (19283, 1089074), (22226, 944867), (24542, 855701), (38566, 544537), (77791, 269962), (85897, 244486), (122243, 171794), (134981, 155582)]