20821491

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{2017}}^1$

素因数の和:2091

約数の個数: 24

約数和(自身を含む): 31900544

約数和(自身を除く): 11079053

約数列:

[1, 3, 9, 31, 37, 93, 111, 279, 333, 1147, 2017, 3441, 6051, 10323, 18153, 62527, 74629, 187581, 223887, 562743, 671661, 2313499, 6940497, 20821491]

約数ペア:

[(1, 20821491), (3, 6940497), (9, 2313499), (31, 671661), (37, 562743), (93, 223887), (111, 187581), (279, 74629), (333, 62527), (1147, 18153), (2017, 10323), (3441, 6051)]