21316976

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6763}}^1$

素因数の和:6968

約数の個数: 20

約数和(自身を含む): 41517432

約数和(自身を除く): 20200456

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6763, 13526, 27052, 54104, 108208, 1332311, 2664622, 5329244, 10658488, 21316976]

約数ペア:

[(1, 21316976), (2, 10658488), (4, 5329244), (8, 2664622), (16, 1332311), (197, 108208), (394, 54104), (788, 27052), (1576, 13526), (3152, 6763)]