21706069

素因数分解:

$7^3\times {\mathrm{11}}^2\times {\mathrm{523}}^1$

素因数の和:566

約数の個数: 24

約数和(自身を含む): 27876800

約数和(自身を除く): 6170731

約数列:

[1, 7, 11, 49, 77, 121, 343, 523, 539, 847, 3661, 3773, 5753, 5929, 25627, 40271, 41503, 63283, 179389, 281897, 442981, 1973279, 3100867, 21706069]

約数ペア:

[(1, 21706069), (7, 3100867), (11, 1973279), (49, 442981), (77, 281897), (121, 179389), (343, 63283), (523, 41503), (539, 40271), (847, 25627), (3661, 5929), (3773, 5753)]