20402559

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 30401280

約数和(自身を除く): 9998721

約数列:

[1, 3, 9, 47, 139, 141, 347, 417, 423, 1041, 1251, 3123, 6533, 16309, 19599, 48233, 48927, 58797, 144699, 146781, 434097, 2266951, 6800853, 20402559]

約数ペア:

[(1, 20402559), (3, 6800853), (9, 2266951), (47, 434097), (139, 146781), (141, 144699), (347, 58797), (417, 48927), (423, 48233), (1041, 19599), (1251, 16309), (3123, 6533)]