66707780

素因数分解:

$2^2\times 5^1\times {\mathrm{3335389}}^1$

素因数の和:3335398

約数の個数: 12

約数和(自身を含む): 140086380

約数和(自身を除く): 73378600

約数列:

[1, 2, 4, 5, 10, 20, 3335389, 6670778, 13341556, 16676945, 33353890, 66707780]

約数ペア:

[(1, 66707780), (2, 33353890), (4, 16676945), (5, 13341556), (10, 6670778), (20, 3335389)]