21381107

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^2\times {\mathrm{433}}^1$

素因数の和:578

約数の個数: 12

約数和(自身を含む): 23732856

約数和(自身を除く): 2351749

約数列:

[1, 11, 67, 433, 737, 4489, 4763, 29011, 49379, 319121, 1943737, 21381107]

約数ペア:

[(1, 21381107), (11, 1943737), (67, 319121), (433, 49379), (737, 29011), (4489, 4763)]