20082008

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 38601360

約数和(自身を除く): 18519352

約数列:

[1, 2, 4, 8, 73, 137, 146, 251, 274, 292, 502, 548, 584, 1004, 1096, 2008, 10001, 18323, 20002, 34387, 36646, 40004, 68774, 73292, 80008, 137548, 146584, 275096, 2510251, 5020502, 10041004, 20082008]

約数ペア:

[(1, 20082008), (2, 10041004), (4, 5020502), (8, 2510251), (73, 275096), (137, 146584), (146, 137548), (251, 80008), (274, 73292), (292, 68774), (502, 40004), (548, 36646), (584, 34387), (1004, 20002), (1096, 18323), (2008, 10001)]