20778888590

素因数分解:

$2^1\times 5^1\times {\mathrm{9161}}^1\times {\mathrm{226819}}^1$

素因数の和:235987

約数の個数: 16

約数和(自身を含む): 37406247120

約数和(自身を除く): 16627358530

約数列:

[1, 2, 5, 10, 9161, 18322, 45805, 91610, 226819, 453638, 1134095, 2268190, 2077888859, 4155777718, 10389444295, 20778888590]

約数ペア:

[(1, 20778888590), (2, 10389444295), (5, 4155777718), (10, 2077888859), (9161, 2268190), (18322, 1134095), (45805, 453638), (91610, 226819)]