21700085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5557}}^1$

素因数の和:5644

約数の個数: 16

約数和(自身を含む): 28812672

約数和(自身を除く): 7112587

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 5557, 27785, 61127, 305635, 394547, 1972735, 4340017, 21700085]

約数ペア:

[(1, 21700085), (5, 4340017), (11, 1972735), (55, 394547), (71, 305635), (355, 61127), (781, 27785), (3905, 5557)]