21177999

素因数分解:

$3^2\times {\mathrm{641}}^1\times {\mathrm{3671}}^1$

素因数の和:4318

約数の個数: 12

約数和(自身を含む): 30646512

約数和(自身を除く): 9468513

約数列:

[1, 3, 9, 641, 1923, 3671, 5769, 11013, 33039, 2353111, 7059333, 21177999]

約数ペア:

[(1, 21177999), (3, 7059333), (9, 2353111), (641, 33039), (1923, 11013), (3671, 5769)]