20428335

素因数分解:

$3^3\times 5^1\times {\mathrm{389}}^2$

素因数の和:792

約数の個数: 24

約数和(自身を含む): 36410640

約数和(自身を除く): 15982305

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 389, 1167, 1945, 3501, 5835, 10503, 17505, 52515, 151321, 453963, 756605, 1361889, 2269815, 4085667, 6809445, 20428335]

約数ペア:

[(1, 20428335), (3, 6809445), (5, 4085667), (9, 2269815), (15, 1361889), (27, 756605), (45, 453963), (135, 151321), (389, 52515), (1167, 17505), (1945, 10503), (3501, 5835)]