209690991

素因数分解:

$3^3\times {\mathrm{1997}}^1\times {\mathrm{3889}}^1$

素因数の和:5895

約数の個数: 16

約数和(自身を含む): 310888800

約数和(自身を除く): 101197809

約数列:

[1, 3, 9, 27, 1997, 3889, 5991, 11667, 17973, 35001, 53919, 105003, 7766333, 23298999, 69896997, 209690991]

約数ペア:

[(1, 209690991), (3, 69896997), (9, 23298999), (27, 7766333), (1997, 105003), (3889, 53919), (5991, 35001), (11667, 17973)]