20789901

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{373}}^1\times {\mathrm{563}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 32906016

約数和(自身を除く): 12116115

約数列:

[1, 3, 9, 11, 33, 99, 373, 563, 1119, 1689, 3357, 4103, 5067, 6193, 12309, 18579, 36927, 55737, 209999, 629997, 1889991, 2309989, 6929967, 20789901]

約数ペア:

[(1, 20789901), (3, 6929967), (9, 2309989), (11, 1889991), (33, 629997), (99, 209999), (373, 55737), (563, 36927), (1119, 18579), (1689, 12309), (3357, 6193), (4103, 5067)]