211789985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{4007}}^1$

素因数の和:4085

約数の個数: 24

約数和(自身を含む): 286555968

約数和(自身を除く): 74765983

約数列:

[1, 5, 11, 31, 55, 155, 341, 961, 1705, 4007, 4805, 10571, 20035, 44077, 52855, 124217, 220385, 621085, 1366387, 3850727, 6831935, 19253635, 42357997, 211789985]

約数ペア:

[(1, 211789985), (5, 42357997), (11, 19253635), (31, 6831935), (55, 3850727), (155, 1366387), (341, 621085), (961, 220385), (1705, 124217), (4007, 52855), (4805, 44077), (10571, 20035)]