21860727

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{563}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 34164864

約数和(自身を除く): 12304137

約数列:

[1, 3, 7, 21, 43, 129, 301, 563, 903, 1689, 1849, 3941, 5547, 11823, 12943, 24209, 38829, 72627, 169463, 508389, 1040987, 3122961, 7286909, 21860727]

約数ペア:

[(1, 21860727), (3, 7286909), (7, 3122961), (21, 1040987), (43, 508389), (129, 169463), (301, 72627), (563, 38829), (903, 24209), (1689, 12943), (1849, 11823), (3941, 5547)]