21856307

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{647}}^1$

素因数の和:778

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 2964685

約数列:

[1, 11, 37, 83, 407, 647, 913, 3071, 7117, 23939, 33781, 53701, 263329, 590711, 1986937, 21856307]

約数ペア:

[(1, 21856307), (11, 1986937), (37, 590711), (83, 263329), (407, 53701), (647, 33781), (913, 23939), (3071, 7117)]