21274155

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67537}}^1$

素因数の和:67555

約数の個数: 24

約数和(自身を含む): 42143712

約数和(自身を除く): 20869557

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67537, 202611, 337685, 472759, 607833, 1013055, 1418277, 2363795, 3039165, 4254831, 7091385, 21274155]

約数ペア:

[(1, 21274155), (3, 7091385), (5, 4254831), (7, 3039165), (9, 2363795), (15, 1418277), (21, 1013055), (35, 607833), (45, 472759), (63, 337685), (105, 202611), (315, 67537)]