21371768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1151}}^1$

素因数の和:1379

約数の個数: 32

約数和(自身を含む): 43960320

約数和(自身を除く): 22588552

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 211, 422, 844, 1151, 1688, 2302, 2321, 4604, 4642, 9208, 9284, 12661, 18568, 25322, 50644, 101288, 242861, 485722, 971444, 1942888, 2671471, 5342942, 10685884, 21371768]

約数ペア:

[(1, 21371768), (2, 10685884), (4, 5342942), (8, 2671471), (11, 1942888), (22, 971444), (44, 485722), (88, 242861), (211, 101288), (422, 50644), (844, 25322), (1151, 18568), (1688, 12661), (2302, 9284), (2321, 9208), (4604, 4642)]