20911605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9749}}^1$

素因数の和:9781

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18400395

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9749, 29247, 48745, 107239, 126737, 146235, 321717, 380211, 536195, 633685, 1394107, 1608585, 1901055, 4182321, 6970535, 20911605]

約数ペア:

[(1, 20911605), (3, 6970535), (5, 4182321), (11, 1901055), (13, 1608585), (15, 1394107), (33, 633685), (39, 536195), (55, 380211), (65, 321717), (143, 146235), (165, 126737), (195, 107239), (429, 48745), (715, 29247), (2145, 9749)]