20023.000000

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{829}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 1882440

約数和(自身を除く): 1003700

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 829, 1060, 1658, 3316, 4145, 8290, 16580, 43937, 87874, 175748, 219685, 439370, 878740]

約数ペア:

[(1, 878740), (2, 439370), (4, 219685), (5, 175748), (10, 87874), (20, 43937), (53, 16580), (106, 8290), (212, 4145), (265, 3316), (530, 1658), (829, 1060)]