21628977

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{727}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 29632512

約数和(自身を除く): 8003535

約数列:

[1, 3, 47, 141, 211, 633, 727, 2181, 9917, 29751, 34169, 102507, 153397, 460191, 7209659, 21628977]

約数ペア:

[(1, 21628977), (3, 7209659), (47, 460191), (141, 153397), (211, 102507), (633, 34169), (727, 29751), (2181, 9917)]