21695180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83443}}^1$

素因数の和:83465

約数の個数: 24

約数和(自身を含む): 49065072

約数和(自身を除く): 27369892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83443, 166886, 333772, 417215, 834430, 1084759, 1668860, 2169518, 4339036, 5423795, 10847590, 21695180]

約数ペア:

[(1, 21695180), (2, 10847590), (4, 5423795), (5, 4339036), (10, 2169518), (13, 1668860), (20, 1084759), (26, 834430), (52, 417215), (65, 333772), (130, 166886), (260, 83443)]