139332020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{17909}}^1$

素因数の和:18307

約数の個数: 24

約数和(自身を含む): 293365800

約数和(自身を除く): 154033780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 17909, 35818, 71636, 89545, 179090, 358180, 6966601, 13933202, 27866404, 34833005, 69666010, 139332020]

約数ペア:

[(1, 139332020), (2, 69666010), (4, 34833005), (5, 27866404), (10, 13933202), (20, 6966601), (389, 358180), (778, 179090), (1556, 89545), (1945, 71636), (3890, 35818), (7780, 17909)]