18870831

素因数分解:

$3^2\times 7^3\times {\mathrm{6113}}^1$

素因数の和:6140

約数の個数: 24

約数和(自身を含む): 31792800

約数和(自身を除く): 12921969

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6113, 18339, 42791, 55017, 128373, 299537, 385119, 898611, 2096759, 2695833, 6290277, 18870831]

約数ペア:

[(1, 18870831), (3, 6290277), (7, 2695833), (9, 2096759), (21, 898611), (49, 385119), (63, 299537), (147, 128373), (343, 55017), (441, 42791), (1029, 18339), (3087, 6113)]