21563311

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{1451}}^1$

素因数の和:1662

約数の個数: 16

約数和(自身を含む): 27042048

約数和(自身を除く): 5478737

約数列:

[1, 7, 11, 77, 193, 1351, 1451, 2123, 10157, 14861, 15961, 111727, 280043, 1960301, 3080473, 21563311]

約数ペア:

[(1, 21563311), (7, 3080473), (11, 1960301), (77, 280043), (193, 111727), (1351, 15961), (1451, 14861), (2123, 10157)]