20431845

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7207}}^1$

素因数の和:7231

約数の個数: 40

約数和(自身を含む): 41864064

約数和(自身を除く): 21432219

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7207, 21621, 36035, 50449, 64863, 108105, 151347, 194589, 252245, 324315, 454041, 583767, 756735, 972945, 1362123, 2270205, 2918835, 4086369, 6810615, 20431845]

約数ペア:

[(1, 20431845), (3, 6810615), (5, 4086369), (7, 2918835), (9, 2270205), (15, 1362123), (21, 972945), (27, 756735), (35, 583767), (45, 454041), (63, 324315), (81, 252245), (105, 194589), (135, 151347), (189, 108105), (315, 64863), (405, 50449), (567, 36035), (945, 21621), (2835, 7207)]