21082017

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{5861}}^1$

素因数の和:5984

約数の個数: 16

約数和(自身を含む): 30951360

約数和(自身を除く): 9869343

約数列:

[1, 3, 11, 33, 109, 327, 1199, 3597, 5861, 17583, 64471, 193413, 638849, 1916547, 7027339, 21082017]

約数ペア:

[(1, 21082017), (3, 7027339), (11, 1916547), (33, 638849), (109, 193413), (327, 64471), (1199, 17583), (3597, 5861)]