21157928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{14143}}^1$

素因数の和:14177

約数の個数: 32

約数和(自身を含む): 45826560

約数和(自身を除く): 24668632

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 88, 136, 187, 374, 748, 1496, 14143, 28286, 56572, 113144, 155573, 240431, 311146, 480862, 622292, 961724, 1244584, 1923448, 2644741, 5289482, 10578964, 21157928]

約数ペア:

[(1, 21157928), (2, 10578964), (4, 5289482), (8, 2644741), (11, 1923448), (17, 1244584), (22, 961724), (34, 622292), (44, 480862), (68, 311146), (88, 240431), (136, 155573), (187, 113144), (374, 56572), (748, 28286), (1496, 14143)]