21291105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129037}}^1$

素因数の和:129056

約数の個数: 16

約数和(自身を含む): 37162944

約数和(自身を除く): 15871839

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129037, 387111, 645185, 1419407, 1935555, 4258221, 7097035, 21291105]

約数ペア:

[(1, 21291105), (3, 7097035), (5, 4258221), (11, 1935555), (15, 1419407), (33, 645185), (55, 387111), (165, 129037)]