20638485

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65519}}^1$

素因数の和:65537

約数の個数: 24

約数和(自身を含む): 40884480

約数和(自身を除く): 20245995

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65519, 196557, 327595, 458633, 589671, 982785, 1375899, 2293165, 2948355, 4127697, 6879495, 20638485]

約数ペア:

[(1, 20638485), (3, 6879495), (5, 4127697), (7, 2948355), (9, 2293165), (15, 1375899), (21, 982785), (35, 589671), (45, 458633), (63, 327595), (105, 196557), (315, 65519)]