21174291

素因数分解:

$3^5\times {\mathrm{79}}^1\times {\mathrm{1103}}^1$

素因数の和:1197

約数の個数: 24

約数和(自身を含む): 32148480

約数和(自身を除く): 10974189

約数列:

[1, 3, 9, 27, 79, 81, 237, 243, 711, 1103, 2133, 3309, 6399, 9927, 19197, 29781, 87137, 89343, 261411, 268029, 784233, 2352699, 7058097, 21174291]

約数ペア:

[(1, 21174291), (3, 7058097), (9, 2352699), (27, 784233), (79, 268029), (81, 261411), (237, 89343), (243, 87137), (711, 29781), (1103, 19197), (2133, 9927), (3309, 6399)]