218405

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2$

素因数の和:65

約数の個数: 18

約数和(自身を含む): 304038

約数和(自身を除く): 85633

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 361, 605, 1045, 1805, 2299, 3971, 11495, 19855, 43681, 218405]

約数ペア:

[(1, 218405), (5, 43681), (11, 19855), (19, 11495), (55, 3971), (95, 2299), (121, 1805), (209, 1045), (361, 605)]