20512991540

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1237213}}^1$

素因数の和:1238051

約数の個数: 24

約数和(自身を含む): 43129280040

約数和(自身を除く): 22616288500

約数列:

[1, 2, 4, 5, 10, 20, 829, 1658, 3316, 4145, 8290, 16580, 1237213, 2474426, 4948852, 6186065, 12372130, 24744260, 1025649577, 2051299154, 4102598308, 5128247885, 10256495770, 20512991540]

約数ペア:

[(1, 20512991540), (2, 10256495770), (4, 5128247885), (5, 4102598308), (10, 2051299154), (20, 1025649577), (829, 24744260), (1658, 12372130), (3316, 6186065), (4145, 4948852), (8290, 2474426), (16580, 1237213)]