21804489

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20359}}^1$

素因数の和:20389

約数の個数: 24

約数和(自身を含む): 38113920

約数和(自身を除く): 16309431

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20359, 61077, 142513, 183231, 346103, 427539, 1038309, 1282617, 2422721, 3114927, 7268163, 21804489]

約数ペア:

[(1, 21804489), (3, 7268163), (7, 3114927), (9, 2422721), (17, 1282617), (21, 1038309), (51, 427539), (63, 346103), (119, 183231), (153, 142513), (357, 61077), (1071, 20359)]