18486531380

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{465187}}^1$

素因数の和:467183

約数の個数: 24

約数和(自身を含む): 38841337248

約数和(自身を除く): 20354805868

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 7948, 9935, 19870, 39740, 465187, 930374, 1860748, 2325935, 4651870, 9303740, 924326569, 1848653138, 3697306276, 4621632845, 9243265690, 18486531380]

約数ペア:

[(1, 18486531380), (2, 9243265690), (4, 4621632845), (5, 3697306276), (10, 1848653138), (20, 924326569), (1987, 9303740), (3974, 4651870), (7948, 2325935), (9935, 1860748), (19870, 930374), (39740, 465187)]