80180180

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{31567}}^1$

素因数の和:31703

約数の個数: 24

約数和(自身を含む): 169709568

約数和(自身を除く): 89529388

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 31567, 63134, 126268, 157835, 315670, 631340, 4009009, 8018018, 16036036, 20045045, 40090090, 80180180]

約数ペア:

[(1, 80180180), (2, 40090090), (4, 20045045), (5, 16036036), (10, 8018018), (20, 4009009), (127, 631340), (254, 315670), (508, 157835), (635, 126268), (1270, 63134), (2540, 31567)]