21615315

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4129}}^1$

素因数の和:4486

約数の個数: 16

約数和(自身を含む): 34692000

約数和(自身を除く): 13076685

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 4129, 5235, 12387, 20645, 61935, 1441021, 4323063, 7205105, 21615315]

約数ペア:

[(1, 21615315), (3, 7205105), (5, 4323063), (15, 1441021), (349, 61935), (1047, 20645), (1745, 12387), (4129, 5235)]