207999

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{191}}^1$

素因数の和:219

約数の個数: 18

約数和(自身を含む): 331968

約数和(自身を除く): 123969

約数列:

[1, 3, 9, 11, 33, 99, 121, 191, 363, 573, 1089, 1719, 2101, 6303, 18909, 23111, 69333, 207999]

約数ペア:

[(1, 207999), (3, 69333), (9, 23111), (11, 18909), (33, 6303), (99, 2101), (121, 1719), (191, 1089), (363, 573)]