21940215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132971}}^1$

素因数の和:132990

約数の個数: 16

約数和(自身を含む): 38295936

約数和(自身を除く): 16355721

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132971, 398913, 664855, 1462681, 1994565, 4388043, 7313405, 21940215]

約数ペア:

[(1, 21940215), (3, 7313405), (5, 4388043), (11, 1994565), (15, 1462681), (33, 664855), (55, 398913), (165, 132971)]