201221505

素因数分解:

$3^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{5407}}^1$

素因数の和:6245

約数の個数: 24

約数和(自身を含む): 349270272

約数和(自身を除く): 148048767

約数列:

[1, 3, 5, 9, 15, 45, 827, 2481, 4135, 5407, 7443, 12405, 16221, 27035, 37215, 48663, 81105, 243315, 4471589, 13414767, 22357945, 40244301, 67073835, 201221505]

約数ペア:

[(1, 201221505), (3, 67073835), (5, 40244301), (9, 22357945), (15, 13414767), (45, 4471589), (827, 243315), (2481, 81105), (4135, 48663), (5407, 37215), (7443, 27035), (12405, 16221)]