216921955

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{7901}}^1$

素因数の和:7959

約数の個数: 24

約数和(自身を含む): 291109680

約数和(自身を除く): 74187725

約数列:

[1, 5, 17, 19, 85, 95, 289, 323, 1445, 1615, 5491, 7901, 27455, 39505, 134317, 150119, 671585, 750595, 2283389, 2552023, 11416945, 12760115, 43384391, 216921955]

約数ペア:

[(1, 216921955), (5, 43384391), (17, 12760115), (19, 11416945), (85, 2552023), (95, 2283389), (289, 750595), (323, 671585), (1445, 150119), (1615, 134317), (5491, 39505), (7901, 27455)]