21887612

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{887}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 39782400

約数和(自身を除く): 17894788

約数列:

[1, 2, 4, 31, 62, 124, 199, 398, 796, 887, 1774, 3548, 6169, 12338, 24676, 27497, 54994, 109988, 176513, 353026, 706052, 5471903, 10943806, 21887612]

約数ペア:

[(1, 21887612), (2, 10943806), (4, 5471903), (31, 706052), (62, 353026), (124, 176513), (199, 109988), (398, 54994), (796, 27497), (887, 24676), (1774, 12338), (3548, 6169)]