20605785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4253}}^1$

素因数の和:4297

約数の個数: 32

約数和(自身を含む): 36754560

約数和(自身を除く): 16148775

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4253, 4845, 12759, 21265, 63795, 72301, 80807, 216903, 242421, 361505, 404035, 1084515, 1212105, 1373719, 4121157, 6868595, 20605785]

約数ペア:

[(1, 20605785), (3, 6868595), (5, 4121157), (15, 1373719), (17, 1212105), (19, 1084515), (51, 404035), (57, 361505), (85, 242421), (95, 216903), (255, 80807), (285, 72301), (323, 63795), (969, 21265), (1615, 12759), (4253, 4845)]