65981036180

素因数分解:

$2^2\times 5^1\times {\mathrm{3299051809}}^1$

素因数の和:3299051818

約数の個数: 12

約数和(自身を含む): 138560176020

約数和(自身を除く): 72579139840

約数列:

[1, 2, 4, 5, 10, 20, 3299051809, 6598103618, 13196207236, 16495259045, 32990518090, 65981036180]

約数ペア:

[(1, 65981036180), (2, 32990518090), (4, 16495259045), (5, 13196207236), (10, 6598103618), (20, 3299051809)]