221205999

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29179}}^1$

素因数の和:29227

約数の個数: 24

約数和(自身を含む): 355762560

約数和(自身を除く): 134556561

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 29179, 87537, 204253, 554401, 612759, 1663203, 3880807, 10533619, 11642421, 31600857, 73735333, 221205999]

約数ペア:

[(1, 221205999), (3, 73735333), (7, 31600857), (19, 11642421), (21, 10533619), (57, 3880807), (133, 1663203), (361, 612759), (399, 554401), (1083, 204253), (2527, 87537), (7581, 29179)]