78381009

素因数分解:

$3^2\times 7^1\times {\mathrm{1244143}}^1$

素因数の和:1244156

約数の個数: 12

約数和(自身を含む): 129390976

約数和(自身を除く): 51009967

約数列:

[1, 3, 7, 9, 21, 63, 1244143, 3732429, 8709001, 11197287, 26127003, 78381009]

約数ペア:

[(1, 78381009), (3, 26127003), (7, 11197287), (9, 8709001), (21, 3732429), (63, 1244143)]