21181976

素因数分解:

$2^3\times {\mathrm{677}}^1\times {\mathrm{3911}}^1$

素因数の和:4594

約数の個数: 16

約数和(自身を含む): 39785040

約数和(自身を除く): 18603064

約数列:

[1, 2, 4, 8, 677, 1354, 2708, 3911, 5416, 7822, 15644, 31288, 2647747, 5295494, 10590988, 21181976]

約数ペア:

[(1, 21181976), (2, 10590988), (4, 5295494), (8, 2647747), (677, 31288), (1354, 15644), (2708, 7822), (3911, 5416)]