21308907

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1913}}^1$

素因数の和:2042

約数の個数: 16

約数和(自身を含む): 29399040

約数和(自身を除く): 8090133

約数列:

[1, 3, 47, 79, 141, 237, 1913, 3713, 5739, 11139, 89911, 151127, 269733, 453381, 7102969, 21308907]

約数ペア:

[(1, 21308907), (3, 7102969), (47, 453381), (79, 269733), (141, 151127), (237, 89911), (1913, 11139), (3713, 5739)]