20818721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{1619}}^1$

素因数の和:1804

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 5308639

約数列:

[1, 7, 11, 77, 167, 1169, 1619, 1837, 11333, 12859, 17809, 124663, 270373, 1892611, 2974103, 20818721]

約数ペア:

[(1, 20818721), (7, 2974103), (11, 1892611), (77, 270373), (167, 124663), (1169, 17809), (1619, 12859), (1837, 11333)]