18990785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1069}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 27734400

約数和(自身を除く): 8743615

約数列:

[1, 5, 11, 17, 19, 55, 85, 95, 187, 209, 323, 935, 1045, 1069, 1615, 3553, 5345, 11759, 17765, 18173, 20311, 58795, 90865, 101555, 199903, 223421, 345287, 999515, 1117105, 1726435, 3798157, 18990785]

約数ペア:

[(1, 18990785), (5, 3798157), (11, 1726435), (17, 1117105), (19, 999515), (55, 345287), (85, 223421), (95, 199903), (187, 101555), (209, 90865), (323, 58795), (935, 20311), (1045, 18173), (1069, 17765), (1615, 11759), (3553, 5345)]