21573315

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11149}}^1$

素因数の和:11203

約数の個数: 24

約数和(自身を含む): 38266800

約数和(自身を除く): 16693485

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11149, 33447, 55745, 100341, 167235, 479407, 501705, 1438221, 2397035, 4314663, 7191105, 21573315]

約数ペア:

[(1, 21573315), (3, 7191105), (5, 4314663), (9, 2397035), (15, 1438221), (43, 501705), (45, 479407), (129, 167235), (215, 100341), (387, 55745), (645, 33447), (1935, 11149)]