209780805

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1381}}^1$

素因数の和:1462

約数の個数: 64

約数和(自身を含む): 390055680

約数和(自身を除く): 180274875

約数列:

[1, 3, 5, 13, 15, 19, 39, 41, 57, 65, 95, 123, 195, 205, 247, 285, 533, 615, 741, 779, 1235, 1381, 1599, 2337, 2665, 3705, 3895, 4143, 6905, 7995, 10127, 11685, 17953, 20715, 26239, 30381, 50635, 53859, 56621, 78717, 89765, 131195, 151905, 169863, 269295, 283105, 341107, 393585, 736073, 849315, 1023321, 1075799, 1705535, 2208219, 3227397, 3680365, 5116605, 5378995, 11041095, 13985387, 16136985, 41956161, 69926935, 209780805]

約数ペア:

[(1, 209780805), (3, 69926935), (5, 41956161), (13, 16136985), (15, 13985387), (19, 11041095), (39, 5378995), (41, 5116605), (57, 3680365), (65, 3227397), (95, 2208219), (123, 1705535), (195, 1075799), (205, 1023321), (247, 849315), (285, 736073), (533, 393585), (615, 341107), (741, 283105), (779, 269295), (1235, 169863), (1381, 151905), (1599, 131195), (2337, 89765), (2665, 78717), (3705, 56621), (3895, 53859), (4143, 50635), (6905, 30381), (7995, 26239), (10127, 20715), (11685, 17953)]