209965721

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1\times {\mathrm{1571}}^1$

素因数の和:1952

約数の個数: 16

約数和(自身を含む): 244829568

約数和(自身を除く): 34863847

約数列:

[1, 7, 61, 313, 427, 1571, 2191, 10997, 19093, 95831, 133651, 491723, 670817, 3442061, 29995103, 209965721]

約数ペア:

[(1, 209965721), (7, 29995103), (61, 3442061), (313, 670817), (427, 491723), (1571, 133651), (2191, 95831), (10997, 19093)]