21392336

素因数分解:

$2^4\times 7^1\times {\mathrm{409}}^1\times {\mathrm{467}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 47586240

約数和(自身を除く): 26193904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 409, 467, 818, 934, 1636, 1868, 2863, 3269, 3272, 3736, 5726, 6538, 6544, 7472, 11452, 13076, 22904, 26152, 45808, 52304, 191003, 382006, 764012, 1337021, 1528024, 2674042, 3056048, 5348084, 10696168, 21392336]

約数ペア:

[(1, 21392336), (2, 10696168), (4, 5348084), (7, 3056048), (8, 2674042), (14, 1528024), (16, 1337021), (28, 764012), (56, 382006), (112, 191003), (409, 52304), (467, 45808), (818, 26152), (934, 22904), (1636, 13076), (1868, 11452), (2863, 7472), (3269, 6544), (3272, 6538), (3736, 5726)]