18998815

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{1013}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 25893504

約数和(自身を除く): 6894689

約数列:

[1, 5, 11, 31, 55, 121, 155, 341, 605, 1013, 1705, 3751, 5065, 11143, 18755, 31403, 55715, 122573, 157015, 345433, 612865, 1727165, 3799763, 18998815]

約数ペア:

[(1, 18998815), (5, 3799763), (11, 1727165), (31, 612865), (55, 345433), (121, 157015), (155, 122573), (341, 55715), (605, 31403), (1013, 18755), (1705, 11143), (3751, 5065)]